Method and apparatus for performing dynamic cross-link interference measurement and reporting in next-generation mobile communication system

ABSTRACT

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method for performing dynamic cross-link interference (CLI) measurement and reporting in a mobile communication system. In accordance with an aspect of the disclosure, the method performed by a terminal comprises: receiving, from a base station, first information for a measurement object associated with a CLI and second information for a report configuration, the first information including at least one of configuration for sounding reference signal (SRS) resources and configuration for resources to measure a received signal strength indicator (RSSI) associated with the CLI; obtaining a reference signal received power (RSRP) of at least one SRS based on the SRS resources and at least one bandwidth part (BWP) identifier (ID) included in the configuration for the SRS resources; and transmitting, to the base station, a measurement report including the RSRP based on the second information.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is based on and claims priority under 35 U.S.C. 119(a)of a Korean patent application number 10-2019-0142498, filed on Nov. 8,2019, in the Korean Intellectual Property Office, and of a Korean patentapplication number 10-2019-0150303, filed on Nov. 21, 2019, in theKorean Intellectual Property Office, the disclosure of each of which isincorporated by reference herein in its entirety.

BACKGROUND 1. Field

The disclosure relates to a method and apparatus for performing dynamiccross-link interference measurement and reporting in a mobilecommunication system.

2. Description of Related Art

To meet the demand for wireless data traffic having increased sincedeployment of fourth generation (4G) communication systems, efforts havebeen made to develop an improved fifth generation (5G) or pre-5Gcommunication system. Therefore, the 5G or pre-5G communication systemis also called a ‘Beyond 4G Network’ or a ‘Post Long Term Evolution(LTE) System’. The 5G communication system is considered to beimplemented in higher frequency (mmWave) bands, e.g., 60 GHz bands, soas to accomplish higher data rates. To decrease propagation loss of theradio waves and increase the transmission distance, the beamforming,massive multiple-input multiple-output (MIMO), Full Dimensional MIMO(FD-MIMO), array antenna, an analog beam forming, large scale antennatechniques are discussed in 5G communication systems. In addition, in 5Gcommunication systems, development for system network improvement isunder way based on advanced small cells, cloud Radio Access Networks(RANs), ultra-dense networks, device-to-device (D2D) communication,wireless backhaul, moving network, cooperative communication,Coordinated Multi-Points (CoMP), reception-end interference cancellationand the like. In the 5G system, Hybrid Frequency Shift Keying (FSK) andQuadrature Amplitude Modulation (QAM) (FQAM) and sliding windowsuperposition coding (SWSC) as an advanced coding modulation (ACM), andfilter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA),and sparse code multiple access (SCMA) as an advanced access technologyhave been developed.

The Internet, which is a human centered connectivity network wherehumans generate and consume information, is now evolving to the Internetof Things (IoT) where distributed entities, such as things, exchange andprocess information without human intervention. The Internet ofEverything (IoE), which is a combination of the IoT technology and theBig Data processing technology through connection with a cloud server,has emerged. As technology elements, such as “sensing technology”,“wired/wireless communication and network infrastructure”, “serviceinterface technology”, and “Security technology” have been demanded forIoT implementation, a sensor network, a Machine-to-Machine (M2M)communication, Machine Type Communication (MTC), and so forth have beenrecently researched. Such an IoT environment may provide intelligentInternet technology services that create a new value to human life bycollecting and analyzing data generated among connected things. IoT maybe applied to a variety of fields including smart home, smart building,smart city, smart car or connected cars, smart grid, health care, smartappliances and advanced medical services through convergence andcombination between existing Information Technology (IT) and variousindustrial applications.

In line with this, various attempts have been made to apply 5Gcommunication systems to IoT networks. For example, technologies such asa sensor network, Machine Type Communication (MTC), andMachine-to-Machine (M2M) communication may be implemented bybeamforming, MIMO, and array antennas. Application of a cloud RadioAccess Network (RAN) as the above-described Big Data processingtechnology may also be considered to be as an example of convergencebetween the 5G technology and the IoT technology.

Recently, reference signal measurement and reporting in a 5Gcommunication system have been performed only based on a downlinkreference signal transmitted by a base station, and a procedure ofmeasuring and reporting, by a terminal, a signal transmitted fromanother terminal has not been defined. Therefore, a new procedure andfunction are required.

The above information is presented as background information only toassist with an understanding of the disclosure. No determination hasbeen made, and no assertion is made, as to whether any of the abovemight be applicable as prior art with regard to the disclosure.

SUMMARY

The disclosure pertains to receiving a report on cross-link interferenceinformation from a terminal and utilizing the report in order todynamically operate a time-division-duplexed (TDD) resource in a servingcell in which TDD is configured. To this end, a series of operations ofmeasuring and reporting, by a terminal, uplink interference informationtransmitted from another terminal in a neighbor cell (or a cross-link)is to be defined. The interference information may be sounding referencesignal-reference signal received power (SRS-RSRP) and a cross-linkinterference-received signal strength indicator (CLI-RSSI).

Further, reference signal measurement and reporting in the existing newradio (NR) system have been performed based on a downlink referencesignal that is transmitted by a base station. However, a procedure ofmeasuring and reporting, by a terminal, a signal transmitted fromanother terminal has not been defined, and thus a new procedure andfunction are required.

Especially, in the disclosure, in order to solve a problem ofincapability to perform accurate measurement, which may be caused byomission of bandwidth part (BWP)-related information or frequencyinformation in an SRS resource configuration operation for soundingreference signal-reference signal received power (SRS-RSRP) measurement,addition of the BWP-related information or the frequency information isproposed. In addition, the disclosure may allow dynamic turning on-offof measurement of a configured SRS resource, thereby reducing operationtime delay.

In a next-generation mobile communication system according to variousembodiments of the disclosure, a series of procedures for measuring anuplink signal, for example, SRS-RSRP and CLI-RSSI, transmitted fromanother terminal, and reporting a measured value to a base station maybe defined. Accordingly, the base station receiving the measured valuemay configure dynamic TDD based on the measured value. In other words,when interference from neighbor cells is strong, TDD uplink allocationto a terminal may be limited, and accordingly, data quality can beenhanced.

Further, in various embodiments of the disclosure, BWP-relatedinformation or frequency information may be added to SRS measurementresource configuration information in an SRS resource configurationoperation for SRS-RSRP measurement, whereby more accurate measurementcan be performed in consideration of the BWP-related information or thefrequency information. In addition, the disclosure may allow dynamicturning on/off measurement of a configured SRS resource, therebyreducing operation time delay.

Aspects of the disclosure are to address at least the above-mentionedproblems and/or disadvantages and to provide at least the advantagesdescribed below. Accordingly, an aspect of the disclosure is to providean apparatus and method for performing dynamic cross-link interferencemeasurement and reporting.

Additional aspects will be set forth in part in the description whichfollows and, in part, will be apparent from the description, or may belearned by practice of the presented embodiments.

In accordance with an aspect of the disclosure, a method performed by aterminal in a wireless communication system is provided. The methodincludes receiving, from a base station, first information for ameasurement object associated with a cross link interference (CLI) andsecond information for a report configuration, the first informationincluding at least one of configuration for sounding reference signal(SRS) resources and configuration for resources to measure a receivedsignal strength indicator (RSSI) associated with the CLI, obtaining areference signal received power (RSRP) of at least one SRS based on theSRS resources and at least one bandwidth part (BWP) identifier (ID)included in the configuration for the SRS resources, and transmitting,to the base station, a measurement report including the RSRP based onthe second information.

In an embodiment of the disclosure, wherein the at least one SRS isidentified based on the SRS resources, the at least one BWP ID, andinformation on a serving cell included in the configuration for the SRSresources, the serving cell being associated with the at least one BWPID.

In an embodiment of the disclosure, wherein transmitting the measurementreport comprises in case that a RSRP threshold is included in the secondinformation and is lower than the RSRP, transmitting, to the basestation, the measurement report including the RSRP.

In an embodiment of the disclosure, the method further comprisesobtaining the RSSI associated with the CLI based on the configurationfor the resources, and in case that a RSSI threshold is included in thesecond information and is lower than the RSSI, transmitting, to the basestation, a measurement report including the RSSI.

In accordance with another aspect of the disclosure, a method performedby a base station is provided. The method includes transmitting, to aterminal, first information for a measurement object associated with across link interference (CLI) and second information for a reportconfiguration, the first information including at least one ofconfiguration for sounding reference signal (SRS) resources andconfiguration for resources to measure a received signal strengthindicator (RSSI) associated with the CLI, and receiving, from theterminal, a measurement report including a reference signal receivedpower (RSRP) of at least one sounding reference signal (SRS) based onthe second information, wherein the RSRP of the at least one SRS isobtained based on the SRS resources, and at least one bandwidth part(BWP) identifier (ID) included in the configuration for the SRSresources.

In an embodiment of the disclosure, wherein the at least one SRS isidentified based on the SRS resources, the at least one BWP ID, andinformation on a serving cell included in the configuration for the SRSresources, the serving cell being associated with the at least one BWPID.

In an embodiment of the disclosure, wherein receiving the measurementreport comprises in case that a RSRP threshold is included in the secondinformation and is lower than the RSRP, receiving, from the terminal,the measurement report including the RSRP.

In an embodiment of the disclosure, the method further comprises: incase that a RSSI threshold is included in the second information and islower than a RSSI, receiving, from the terminal, a measurement reportincluding the RSSI, wherein the RSSI associated with the CLI is obtainedbased on the configuration for the resources.

In accordance with another aspect of the disclosure, a terminal in awireless communication system is provided. The terminal includes atransceiver, and a controller coupled with the transceiver andconfigured to receive, from a base station, first information for ameasurement object associated with a cross link interference (CLI) andsecond information for a report configuration, the first informationincluding at least one of configuration for sounding reference signal(SRS) resources and configuration for resources to measure a receivedsignal strength indicator (RSSI) associated with the CLI, obtain areference signal received power (RSRP) of at least one SRS based on theSRS resources, and at least one bandwidth part (BWP) identifier (ID)included in the configuration for the SRS resources, and transmit, tothe base station, a measurement report including the RSRP based on thesecond information.

In an embodiment of the disclosure, wherein the at least one SRS isidentified based on the SRS resources, the at least one BWP ID, andinformation on a serving cell included in the configuration for the SRSresources, the serving cell being associated with the at least one BWPID.

In an embodiment of the disclosure, wherein the controller is configuredto in case that a RSRP threshold is included in the second informationand is lower than the RSRP, transmit, to the base station, themeasurement report including the RSRP.

In an embodiment of the disclosure, wherein the controller is furtherconfigured to obtain the RSSI associated with the CLI based on theconfiguration for the resources, and in case that a RSSI threshold isincluded in the second information and is lower than the RSSI, transmit,to the base station, a measurement report including the RSSI.

In accordance with another aspect of the disclosure, a base station in awireless communication system is provided. The base station includes atransceiver, and a controller coupled with the transceiver andconfigured to transmit, to a terminal, first information for ameasurement object associated with a cross link interference (CLI) andsecond information for a report configuration, the first informationincluding at least one of configuration for sounding reference signal(SRS) resources and configuration for resources to measure a receivedsignal strength indicator (RSSI) associated with the CLI, and receive,from the terminal, a measurement report including a reference signalreceived power (RSRP) of at least one sounding reference signal (SRS)based on the second information, wherein the RSRP of the at least oneSRS is obtained based on the SRS resources, and at least one bandwidthpart (BWP) identifier (ID) included in the configuration for the SRSresources.

In an embodiment of the disclosure, wherein the at least one SRS isidentified based on the SRS resources, the at least one BWP ID, andinformation on a serving cell included in the configuration for the SRSresources, the serving cell being associated with the at least one BWPID.

In an embodiment of the disclosure, wherein the controller is configuredto in case that a RSRP threshold is included in the second informationand is lower than the RSRP, receive, from the terminal, the measurementreport including the RSRP.

In an embodiment of the disclosure, wherein the controller is furtherconfigured to in case that a RSSI threshold is included in the secondinformation and is lower than a RSSI, receive, from the terminal, ameasurement report including the RSSI, wherein the RSSI associated withthe CLI is obtained based on the configuration for the resources.

Other aspects, advantages, and salient features of the disclosure willbecome apparent to those skilled in the art from the following detaileddescription, which, taken in conjunction with the annexed drawings,discloses various embodiments of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and advantages of certainembodiments of the disclosure will be more apparent from the followingdescription taken in conjunction with the accompanying drawings, inwhich:

FIG. 1 illustrates a structure of an LTE system according to anembodiment of the disclosure;

FIG. 2 illustrates a radio protocol structure in an LTE system accordingto an embodiment of the disclosure;

FIG. 3 illustrates the structure of a next-generation mobilecommunication system according to an embodiment of the disclosure;

FIG. 4 illustrates a radio protocol structure in the next-generationmobile communication system according to an embodiment of thedisclosure;

FIG. 5 illustrates cross-link interference in the case in which TDDcells are configured in a next-generation mobile communication systemaccording to an embodiment of the disclosure;

FIG. 6 illustrates overall process of receiving a measurementconfiguration including cross-link interference from a base station andtransmitting a measurement report relating thereto to the base stationby a terminal in a next-generation mobile communication system accordingto an embodiment of the disclosure;

FIG. 7 illustrates the structure of a medium-access-control-controlelement (MAC CE) indicating dynamic SRS measurement for cross-linkinterference according to an embodiment of the disclosure;

FIG. 8 illustrates overall terminal operation for cross-linkinterference measurement and reporting according to an embodiment of thedisclosure;

FIG. 9 illustrates overall terminal operation in the case in whichmeasurement report is configured for cross-link interference accordingto an embodiment of the disclosure;

FIG. 10 illustrates overall base station operation for cross-linkinterference measurement and reporting according to an embodiment of thedisclosure;

FIG. 11 is a block diagram illustrating the internal structure of aterminal according to an embodiment of the disclosure; and

FIG. 12 is a block diagram illustrating the configuration of a basestation according to an embodiment of the disclosure.

The same reference numerals are used to represent the same elementsthroughout the drawings.

DETAILED DESCRIPTION

The following description with reference to the accompanying drawings isprovided to assist in a comprehensive understanding of variousembodiments of the disclosure as defined by the claims and theirequivalents. It includes various specific details to assist in thatunderstanding but these are to be regarded as merely exemplary.Accordingly, those of ordinary skill in the art will recognize thatvarious changes and modifications of the various embodiments describedherein can be made without departing from the scope and spirit of thedisclosure. In addition, descriptions of well-known functions andconstructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are notlimited to the bibliographical meanings, but, are merely used by theinventor to enable a clear and consistent understanding of thedisclosure. Accordingly, it should be apparent to those skilled in theart that the following description of various embodiments of thedisclosure is provided for illustration purpose only and not for thepurpose of limiting the disclosure as defined by the appended claims andtheir equivalents.

It is to be understood that the singular forms “a,” “an,” and “the”include plural referents unless the context clearly dictates otherwise.Thus, for example, reference to “a component surface” includes referenceto one or more of such surfaces.

Here, it will be understood that each block of the flowchartillustrations, and combinations of blocks in the flowchartillustrations, can be implemented by computer program instructions.These computer program instructions can be provided to a processor of ageneral purpose computer, special purpose computer, or otherprogrammable data processing apparatus to produce a machine, such thatthe instructions, which execute via the processor of the computer orother programmable data processing apparatus, create means forimplementing the functions specified in the flowchart block or blocks.These computer program instructions may also be stored in a computerusable or computer-readable memory that can direct a computer or otherprogrammable data processing apparatus to function in a particularmanner, such that the instructions stored in the computer usable orcomputer-readable memory produce an article of manufacture includinginstruction means that implement the function specified in the flowchartblock or blocks. The computer program instructions may also be loadedonto a computer or other programmable data processing apparatus to causea series of operations to be performed on the computer or otherprogrammable apparatus to produce a computer implemented process suchthat the instructions that execute on the computer or other programmableapparatus provide operations for implementing the functions specified inthe flowchart block or blocks.

Further, each block of the flowchart illustrations may represent amodule, segment, or portion of code, which includes one or moreexecutable instructions for implementing the specified logicalfunction(s). It should also be noted that in some alternativeimplementations, the functions noted in the blocks may occur out of theorder. For example, two blocks shown in succession may in fact beexecuted substantially concurrently or the blocks may sometimes beexecuted in the reverse order, depending upon the functionalityinvolved.

As used herein, the “unit” refers to a software element or a hardwareelement, such as a Field Programmable Gate Array (FPGA) or anApplication Specific Integrated Circuit (ASIC), which performs apredetermined function. However, the “unit” does not always have ameaning limited to software or hardware. The “unit” may be constructedeither to be stored in an addressable storage medium or to execute oneor more processors. Therefore, the “unit” includes, for example,software elements, object-oriented software elements, class elements ortask elements, processes, functions, properties, procedures,sub-routines, segments of a program code, drivers, firmware,micro-codes, circuits, data, database, data structures, tables, arrays,and parameters. The elements and functions provided by the “unit” may beeither combined into a smaller number of elements, or a “unit”, ordivided into a larger number of elements, or a “unit”. Moreover, theelements and “units” or may be implemented to reproduce one or more CPUswithin a device or a security multimedia card. Further, the “unit” inthe embodiments may include one or more processors.

Hereinafter, the operation principle of the disclosure will be describedin detail in conjunction with the accompanying drawings. In thefollowing description of the disclosure, a detailed description of knownfunctions or configurations incorporated herein will be omitted when itmay make the subject matter of the disclosure unnecessarily unclear. Theterms which will be described below are terms defined in considerationof the functions in the disclosure, and may be different according tousers, intentions of the users, or customs. Therefore, the definitionsof the terms should be made based on the contents throughout thespecification.

In the following description, the disclosure will be described usingterms and names defined in the 3rd generation partnership project longterm evolution (3GPP LTE) standards for the convenience of description.However, the disclosure is not limited by these terms and names, and maybe applied in the same way to systems that conform other standards.

In the following description, terms for identifying access nodes, termsreferring to network entities, terms referring to messages, termsreferring to interfaces between network entities, terms referring tovarious identification information, and the like are illustratively usedfor the sake of convenience. Therefore, the disclosure is not limited bythe terms as used below, and other terms referring to subjects havingequivalent technical meanings may be used. For example, in the followingdescription, the term “terminal” may refer to a MAC entity in eachterminal that exists for each of a master cell group (MCG) and asecondary cell group (SCG).

In the following description, a base station is an entity that allocatesresources to terminals, and may be at least one of a gNode B, an eNodeB, a Node B, a base station (BS), a wireless access unit, a base stationcontroller, and a node on a network. A terminal may include a userequipment (UE), a mobile station (MS), a cellular phone, a smartphone, acomputer, or a multimedia system capable of performing communicationfunctions. Of course, examples of the base station and the terminal arenot limited thereto.

In particular, the disclosure may be applied to intelligent services(e.g., smart homes, smart buildings, smart cities, smart cars orconnected cars, healthcare, digital education, retail business, securityand safety-related services, etc.) on the basis of 5G communicationtechnologies and IoT-related technologies. In the disclosure, the term“eNB” may be interchangeably used with the term “gNB”. That is, a basestation described as “eNB” may indicate “gNB”. Further, the term“terminal” may refer to mobile phones, NB-IoT devices, and sensors, andmay also refer to other wireless communication devices.

A wireless communication system has been developed from a wirelesscommunication system providing voice-centered service in early stagestoward a broadband wireless communication system providing high-speed,high-quality packet data services in accordance with communicationstandards such as high-speed packet access (HSPA), long-term evolution(LTE or evolved universal terrestrial radio access (E-UTRA)),LTE-advanced (LTE-A), and LTE-Pro of 3GPP, high rate packet data (HRPD)and ultra mobile broadband (UMB) of 3GPP2, IEEE 802.16e, and the like.

As a representative example of the broadband wireless communicationsystem, an LTE system has adopted an orthogonal frequency-divisionmultiplexing (OFDM) scheme in a downlink (DL) and has adopted a singlecarrier frequency-division multiple-access (SC-FDMA) scheme in an uplink(UL). The uplink is a radio link through which a user equipment ((UE) ora mobile station (MS)) transmits data or a control signal to a basestation (eNodeB or base station (BS)), and the downlink is a radio linkthrough which a base station transmits data or a control signal to aterminal. The multiple-access scheme as described above normallyallocates and operates time and frequency resources for transmittingdata or control information for each user to prevent the time andfrequency resources from overlapping, that is, to establishorthogonality, thereby dividing the data or the control information ofeach user.

A future communication system subsequent to the LTE, that is, a 5Gcommunication system has to be able to freely reflect variousrequirements from a user, a service provider, and the like, and thusservice satisfying all of the various requirements needs to besupported. The services considered for the 5G communication systeminclude enhanced mobile broadband (eMBB), massive machine-typecommunication (mMTC), ultra-reliable low-latency communication (URLLC),etc.

According to some embodiments, the eMBB aims to provide a data ratesuperior to the data rate supported by the existing LTE, LTE-A, orLTE-Pro. For example, in the 5G communication system, the eMBB should beable to provide a peak data rate of 20 Gbps in the downlink and a peakdata rate of 10 Gbps in the uplink from the viewpoint of one basestation. In addition, the 5G communication system should be able toprovide not only the peak data rate but also an increased user-perceivedterminal data rate. In order to satisfy such requirements, improvementof various transmitting and receiving technologies including a furtherimproved multi-input multi-output (MIMO) transmission technology may berequired in the 5G communication system. In addition, a signal istransmitted using a transmission bandwidth of up to 20 MHz in the 2 GHzband used by the current LTE, but the 5G communication system uses abandwidth wider than 20 MHz in the frequency band of 3 to 6 GHz or 6 GHzor higher, thereby satisfying the data rate required in the 5Gcommunication system.

In addition, the mMTC is being considered to support applicationservices such as the Internet of Things (IoT) in the 5G communicationsystem. The mMTC may be required in order to support access by a largenumber of terminals in a cell, coverage enhancement of a terminal,improved battery time, and cost reduction of a terminal in order toefficiently provide the IoT. The IoT needs to be able to support a largenumber of terminals (for example, 1,000,000 terminals/km²) in a cellbecause it is attached to various sensors and devices to providecommunication functions. Further, a terminal supporting mMTC is morelikely to be located in a shaded area that is not covered by a cell dueto the nature of services, such as a basement of a building, and thusthe terminal requires wider coverage than other services provided in the5G communication system. The terminal supporting mMTC needs to beconfigured as an inexpensive terminal and may require a very longbattery life time, such as 10 to 15 years, because it is difficult tofrequently replace the battery of the terminal.

Finally, the URLLC is a cellular-based wireless communication serviceused for mission-critical purposes, and may be applied to services usedfor remote control for a robot or machinery, industrial automation, anunmanned aerial vehicle, remote health care, an emergency alert, or thelike. Therefore, the communication provided by the URLLC may providevery low latency (ultra-low latency) and very high reliability(ultra-high reliability). For example, a service that supports the URLLCneeds to satisfy air interface latency of less than 0.5 milliseconds,and may also have requirements of a packet error rate of 10-5% or lower.

Therefore, for the service that supports the URLLC, the 5G system needsto provide a transmission time interval (TTI) smaller than those ofother services, and design matters for allocating wide resources in thefrequency band in order to secure reliability of the communication linkmay also arise.

The above-described three services considered in the 5G communicationsystem, that is, the eMBB, the URLLC, and the mMTC, may be multiplexedand transmitted in a single system. Here, in order to satisfy thedifferent requirements of each of the services, different transmissionor reception schemes and different transmission and reception parametersmay be used for the services. However, the above-described mMTC, URLLC,and eMBB are merely examples of different types of services, and thetypes of services which are to be applied according to the disclosureare not limited to the above-described examples.

In addition, hereinafter, embodiments of the disclosure will bedescribed by taking an LTE, LTE-A, LTE-Pro, or 5G (or NR, that is,new-generation mobile communication) system as an example, butembodiments of the disclosure may be applied to other communicationsystems having a similar technical background or channel form. Inaddition, embodiments of the disclosure may be applied to othercommunication systems by those skilled in the art through somemodifications without greatly departing from the scope of thedisclosure.

The methods according to claims of the disclosure or embodiments of thedescription may be implemented in the form of hardware, software, or acombination of hardware and software.

When the methods are implemented as software, a computer-readablestorage medium for storing one or more programs (software modules) maybe provided. The one or more programs stored in the computer-readablestorage medium are configured to be executed by one or more processorsin an electronic device. The one or more programs include instructionswhich cause the electronic device to execute the methods according toclaims of the disclosure or embodiments of the description.

Such a program (software module or software) may be stored innon-volatile memory including random access memory and flash memory,read-only memory (ROM), electrically erasable programmable read-onlymemory (EEPROM), a magnetic disc storage device, a compact disc-ROM(CD-ROM), digital versatile discs (DVDs), other types of optical storagedevice, or a magnetic cassette. Alternatively, the program may be storedin the memory that is configured of combinations of some or all of theabove-described memories. Further, a plurality of such memories may beincluded.

Further, the program may be stored in an attachable storage capable ofbeing accessed through a communication network such as the Internet, anintranet, a local area network (LAN), a wide LAN (WLAN), or a storagearea network (SAN), or a communication network configured as acombination thereof. Such a storage device may access an electronicdevice, which performs an embodiment of the disclosure, via an externalport. Furthermore, an additional storage device on the communicationnetwork may have access to an electronic device which performs anembodiment of the disclosure.

In the above-described embodiments of the disclosure, an element orelements included in the disclosure are expressed in a singular orplural form depending on the described embodiment. However, the singularor plural form is selected appropriately for the situation that isassumed for convenience of description, and the disclosure is notlimited to the singular or plural form. An element expressed in asingular form may include a plurality of elements, and elementsexpressed in a plural form may include a single element.

Although particular embodiments are described in the detaileddescription of the disclosure, it will be apparent that variousmodifications and changes may be made without departing from the scopeof the disclosure. Therefore, the scope of the disclosure should not beconstrued as being limited to the above-described embodiments, butshould be understood to be defined by the appended claims andequivalents thereto.

Hereinafter, an embodiment of the disclosure is described with referenceto the accompanying drawings in detail. The detailed description of awell-known function or configuration incorporated herein may be omittedwhen it is determined that such detailed description may obscure thesubject matter of the disclosure. Further, the following terms aredefined in consideration of functionality in the disclosure, and mayvary according to the intention of a user or an operator, usage, etc.Therefore, the definition should be made on the basis of the overallcontent of the specification.

Advantages and features of the disclosure and methods of accomplishingthe same may be understood more easily with reference to the followingdetailed description of an embodiment and the accompanying drawings. Thedisclosure is not limited to the following embodiments, may beimplemented in many different forms. These embodiments are provided sothat the disclosure will be thorough and complete and will fully conveythe scope of the disclosure to those skilled in the art, and thedisclosure is to be defined only by the appended claims. Like referencenumerals refer to like elements throughout the specification.

Hereinafter, the principle of operation of the disclosure is describedwith reference to the accompanying drawings in detail. A detaileddescription of well-known functions or configurations incorporatedherein may be omitted when it is determined that such detaileddescription may obscure the subject matter of the disclosure. Further,the following terms are defined in consideration of functionality in thedisclosure, and may vary according to the intention of a user or anoperator, usage, etc. Therefore, the definitions should be understood onthe basis of the overall content of the specification. Hereinafter,terms identifying an access node, terms indicating a network entity,terms indicating messages, terms indicating an interface between networkentities, terms indicating various types of identification information,and the like, which are used in the following description, are used asan example for convenience of description. Accordingly, the disclosureis not limited to the terms used below, and other terms indicatingobjects having the equivalent technical meaning may be used.

For convenience of description, the disclosure uses terms and namesdefined in, or modified based on, the 3rd-Generation Partnership Project(3GPP) long-term evolution (LTE) standards. However, the disclosure isnot limited to these terms and names, and may be equally applied tosystems according to other standards. That is, the system to which thedisclosure is applied may be the entire mobile communication system,especially, an entire LTE system or NR system.

FIG. 1 illustrates the structure of an LTE system according to anembodiment of the disclosure.

Referring to FIG. 1 , a radio access network (RAN) of the LTE systemincludes evolved base stations (hereinafter, referred to as “evolvednode Bs (eNBs)”, “Node Bs”, or “base stations”) 1-05, 1-10, 1-15, and1-20, a mobility management entity (MME) 1-25, and a serving-gateway(S-GW) 1-30. A user equipment (hereinafter, referred to as a “UE” or“terminal”) 1-35 accesses an external network via the eNBs 1-05 to 1-20and the S-GW 1-30.

In FIG. 1 , the eNBs 1-05 to 1-20 correspond to the existing node Bs ofa universal mobile telecommunication system (UMTS). The eNB is connectedto the UE 1-35 via a radio channel, and performs more complex functionsthan an existing node B. Since all user traffic data including real-timeservices such as voice over Internet protocol (VoIP) is serviced througha shared channel in the LTE system, a device for collecting stateinformation, such as buffer state information of a UE, availabletransmission power state information, and channel state information andperforming scheduling is required, and each of the eNBs 1-05, 1-10,1-15, and 1-20 serves as such a device. A single eNB generally controlsmultiple cells. For example, the LTE system uses a radio-accesstechnology such as orthogonal frequency-division multiplexing(hereinafter, referred to as “OFDM”) in a bandwidth of 20 MHz to achievea data rate of 100 Mbps.

In addition, the LTE system also applies adaptive modulation & coding(AMC) to determine a modulation scheme and a channel-coding rate inaccordance with the channel state of a terminal. The S-GW 1-30 is adevice for providing a data bearer, and generates or releases the databearer under the control of the MME 1-25. The MME is a device forperforming a mobility management function and various control functionsfor a terminal, and is connected to multiple base stations.

FIG. 2 illustrates a radio protocol structure in an LTE system accordingto an embodiment of the disclosure.

Referring to FIG. 2 , the radio protocol in the LTE system includespacket data convergence protocols (PDCPs) 2-05 and 2-40, radio linkcontrols (RLCs) 2-10 and 2-35, and medium access controls (MACs) 2-15and 2-30 in a terminal and an eNB, respectively. The PDCPs 2-05 and 2-40perform operations of IP header compression/recovery and the like. Themain function of the PDCP is summarized below:

-   -   Header compression and decompression: robust header compression        (ROHC) only    -   Transfer of user data    -   In-sequence delivery of upper layer packet data units (PDUs) at        PDCP re-establishment procedure for RLC acknowledged mode (AM)    -   For split bearers in DC (only support for RLC AM): PDCP PDU        routing for transmission and PDCP PDU reordering for reception    -   Duplicate detection of lower layer service data units (SDUs) at        PDCP re-establishment procedure for RLC AM    -   Retransmission of PDCP SDUs at handover and, for split bearers        in DC, of PDCP PDUs at PDCP data-recovery procedure, for RLC AM    -   Ciphering and deciphering    -   Timer-based SDU discard in uplink.

The radio link controls (hereinafter, referred to as “RLCs”) 2-10 and2-35 reconfigure the PDCP packet data unit (PDU) at an appropriate sizeto perform an automatic repeat reQuest (ARQ) operation or the like. Themain functions of the RLC are summarized below:

-   -   Transfer of upper layer PDUs    -   Error Correction through ARQ (only for AM data transfer)    -   Concatenation, segmentation and reassembly of RLC SDUs (only for        unacknowledged mode (UM) and AM data transfer)    -   Re-segmentation of RLC data PDUs (only for AM data transfer)    -   Reordering of RLC data PDUs (only for UM and AM data transfer    -   Duplicate detection (only for UM and AM data transfer)    -   Protocol error detection (only for AM data transfer)    -   RLC SDU discard (only for UM and AM data transfer)    -   RLC re-establishment.

The MACs 2-15 and 2-30 are connected to several RLC layer devicesconfigured in one terminal, and perform an operation of multiplexing RLCPDUs into a MAC PDU and demultiplexing the RLC PDUs from the MAC PDU.The main functions of the MAC are summarized below:

-   -   Mapping between logical channels and transport channels    -   Multiplexing/demultiplexing of MAC SDUs belonging to one or        different logical channels into/from transport blocks (TB)        delivered to/from the physical layer on transport channels    -   Scheduling information reporting    -   Error correction through HARQ    -   Priority handling between logical channels of one UE    -   Priority handling between UEs by means of dynamic scheduling    -   Multimedia broadcast multicast service (MBMS) service        identification    -   Transport format selection    -   Padding

Physical layers (PHYs) 2-20 and 2-25 generate an OFDM symbol byperforming an operation of channel-coding and modulating upper-layerdata and transmit the same through a radio channel, or perform anoperation of demodulating and channel-decoding the OFDM symbol receivedthrough the radio channel and transmit the same to an upper layer.

FIG. 3 illustrates the structure of a next-generation mobilecommunication system according to an embodiment of the disclosure.

Referring to FIG. 3 , a radio access network in the next-generationmobile communication system includes a new-radio node B (hereinafter,referred to as an “NR NB” or “NR gNB”) 3-10 and a new-radio core network(NR CN) 3-05. A new-radio user equipment (hereinafter, referred to as an“NR UE” or a “terminal”) 3-15 accesses an external network through theNR gNB 3-10 and the NR CN 3-05.

In FIG. 3 , the NR gNB 3-10 corresponds to an evolved node B (eNB) ofthe existing LTE system. The NR gNB may be connected to the NR UE 3-15through a radio channel 3-20, and thus may be capable of providingservice superior to that of the existing node B. Since all user trafficis serviced through shared channels in the next-generation mobilecommunication system, a device for collecting state information, such asbuffer state information of each UE, available transmission power stateinformation, and channel state information, and performing scheduling isrequired, and the NR gNB 3-10 serves as such a device. A single NR gNBgenerally controls multiple cells. In order to implementultra-high-speed data transmission as compared with the existing LTE,the NR gNB may have a maximum bandwidth that is equal to or higher thanthe existing maximum bandwidth, and a beamforming technology may beadditionally combined using orthogonal frequency-division multiplexing(hereinafter, referred to as “OFDM”) as radio connection technology. Inaddition, an adaptive modulation & coding (AMC) scheme that determines amodulation scheme and a channel-coding rate in accordance with thechannel state of the terminal is applied to the NR gNB. The NR CN 3-05performs mobility support, bearer configuration, quality of service(QoS) configuration, and the like. The NR CN is a device that performsnot only terminal mobility management functions but also various typesof control functions, and is connected to multiple base stations.Further, the next-generation mobile communication system may be linkedwith the existing LTE system, and the NR CN is connected to the MME 3-25through a network interface. The MME is connected to an eNB 3-30, thatis, the existing base station.

FIG. 4 illustrates a radio protocol structure in the next-generationmobile communication system according to an embodiment of thedisclosure.

Referring to FIG. 4 , the radio protocol in the next-generation mobilecommunication system includes NR service data adaptation protocols(SDAPs) 4-01 and 4-45, NR PDCPs 4-05 and 4-40, NR RLCs 4-10 and 4-35,and NR MACs 4-15 and 4-30, in a terminal and an NR base station,respectively.

The main function of the NR SDAPs 4-01 and 4-45 may include some of thefollowing functions:

-   -   Transfer of user plane data    -   Mapping between a QoS flow and a data radio bearer (DRB) for        both DL and UL    -   Marking QoS flow ID in both DL and UL packets    -   Reflective QoS flow to DRB mapping for the UL SDAP PDUs.

For an SDAP-layer device, the terminal may receive, through a radioresource control (RRC) message, a configuration as to whether to use aheader of the SDAP-layer device or to use a function of the SDAP-layerdevice function for each PDCP layer device, each bearer, or each logicalchannel. When an SDAP header is configured, the terminal may beindicated to update or reconfigure, with an NAS reflective QoS 1-bitindicator and an AS reflective QoS 1-bit indicator of the SDAP header,mapping information for uplink and downlink QoS flows and a data bearer.The SDAP header may include QoS flow ID information indicating the QoS.The QoS information may be used to determine data-processing priority,as scheduling information, or similarly in order to ensure a smoothservice.

The main functions of the NR PDCPs 4-05 and 4-40 may include some of thefollowing functions:

-   -   Header compression and decompression: ROHC only    -   Transfer of user data    -   In-sequence delivery of upper layer PDUs    -   Out-of-sequence delivery of upper layer PDUs    -   PDCP PDU reordering for reception    -   Duplicate detection of lower layer SDUs    -   Retransmission of PDCP SDUs    -   Ciphering and deciphering    -   Timer-based SDU discard in uplink.

In the above description, the reordering function of the NR PDCP devicerefers to a function of sequentially rearranging PDCP PDUs received in alower layer based on a PDCP sequence number (SN), and may include: afunction of transferring data to an upper layer in the rearranged order,a function of directly transferring data without considering an order; afunction of recording lost PDCP PDUs by rearranging an order; a functionof reporting a state of the lost PDCP PDUs to a transmission end, and afunction of requesting retransmission of the lost PDCP PDUs.

The main function of the NR RLCs 4-10 and 4-35 may include some of thefollowing functions:

-   -   Transfer of upper layer PDUs    -   In-sequence delivery of upper layer PDUs    -   Out-of-sequence delivery of upper layer PDUs    -   Error Correction through ARQ    -   Concatenation, segmentation and reassembly of RLC SDUs    -   Re-segmentation of RLC data PDUs    -   Reordering of RLC data PDUs    -   Duplicate detection    -   Protocol error detection    -   RLC SDU discard    -   RLC re-establishment.

In the above description, the in-sequence delivery function of the NRRLC device refers to a function of sequentially transferring RLC SDUsreceived from a lower layer to an upper layer, and may include: afunction of rearranging and transferring, when a single RLC SDU isdivided into multiple RLC SDUs and received, the divided multiple RLCSDUs; a function of rearranging the received RLC PDUs based on an RLCsequence number (SN) or a PDCP sequence number (SN); a function ofrecording lost RLC PDUs by rearranging an order; a function of reportingthe state of the lost RLC PDUs to a transmission end; a function ofrequesting retransmission of the lost RLC PDUs; a function ofsequentially transferring only RLC SDUs preceding the lost RLC SDU tothe upper layer when there is a lost RLC SDU; a function of sequentiallytransferring all received RLC SDUs to the upper layer before apredetermined timer starts if the timer expires even when there is alost RLC SDU; and a function of transferring all RLC SDUs received up tothat point in time to the upper layer if the predetermined timer expireseven when there is a lost RLC SDU. Further, the NR RLC may process theRLC PDUs in the received order (in order of arrival regardless of theorder of serial numbers or sequence numbers), and may deliver theprocessed RLC PDUs to the PDCP device regardless of the order thereof(out-of-sequence delivery). In the case of a segment, the NR RLC mayreceive segments which are stored in a buffer or are to be receivedlater, reconfigure the segments into one complete RLC PDU, and thenprocess the complete RLC PDU and deliver the same to the PDCP device.The NR RLC layer may not include a concatenation function and mayperform the function in the NR MAC layer or may replace the functionwith a multiplexing function of the NR MAC layer.

In the above description, the out-of-sequence delivery function of theNR RLC device refers to a function of directly delivering, to the upperlayer regardless of order, the RLC SDUs received from the lower layer,and may include: a function of rearranging and transferring, when asingle RLC SDU is divided into multiple RLC SDUs and received, thedivided multiple RLC SDUs; and a function of storing the RLC SN of eachof the received RLC PDUs, rearranging the RLC PDUs, and recording thelost RLC PDUs.

The NR MAC 4-15 and 4-30 may be connected to several NR RLC layerdevices configured in one terminal, and the main functions of the NR MACmay include some of the following functions:

-   -   Mapping between logical channels and transport channels    -   Multiplexing/demultiplexing of MAC SDUs    -   Scheduling information reporting    -   Error correction through HARQ    -   Priority handling between logical channels of one UE    -   Priority handling between UEs by means of dynamic scheduling    -   MBMS service identification    -   Transport format selection    -   Padding

NR Physical layers (NR PHYs) 4-20 and 4-25 may generate an OFDM symbolby performing an operation of channel-coding and modulating upper-layerdata and transmit the same through a radio channel, or may perform anoperation of demodulating and channel-decoding the OFDM symbol receivedthrough the radio channel and transmit the same to the upper layer.

FIG. 5 illustrates cross-link interference in the case in which TDDcells are configured in a next-generation mobile communication systemaccording to an embodiment of the disclosure.

FIG. 5 illustrates an effect of cross-link interference (CLI) inoperating dynamic TDD scheduling/configuration in the LTE and the NRsystem which can be applied to the entire disclosure, and the disclosurehas been proposed to support the corresponding scenario. Further, fromthe viewpoint of a base station, remote interference management (RIM)for a terminal may be performed by receiving and applying a measurementvalue of the cross-link interference. This can be achieved, for example,by applying dynamic TDD scheduling.

Referring to FIG. 5 , a mobile communication network having TDD cellsconfigured therearound may exist. For example, as shown in FIG. 5 , whengNB 1 5-05 (or base station 1) in a serving cell, to which terminal 15-15 is connected, supports a corresponding cell through TDD, gNB 2 5-10(or base station 2) in a neighbor cell may also support thecorresponding cell through TDD. There may exist terminal 2 5-20, whichis connected to and serviced from the gNB 2 5-10. The transmission ofdata and a downlink reference signal 5-25, transmitted to correspondingterminals from base station 1, may be received (measured) as uplinkinterference 5-35 on base station 2. Further, the transmission of dataand an uplink sounding reference signal (SRS) 5-30, transmitted byterminal 2 5-20 to base station 2 5-10 in the serving cell, may bereceived as cross-link interference 5-40 on a terminal, such as terminal1, serviced by another serving cell (base station 1 5-05).

For example, a measurement value of the cross-link interference mayinclude SRS-reference-signal received power (SRS-RSRP), which is an RSRPvalue of an SRS resource measured by a terminal in a current servingcell with respect to an SRS resource transmitted from a terminal in aneighbor cell, or a CLI received signal strength indicator (CLI-RSSI),which is the strength of a signal measured by a terminal in a currentserving cell with respect to all signals transmitted from a terminal ina neighbor cell. Especially, in the disclosure, an effect of cross-linkinterference between terminals shown in 5-40 is considered.

A scheme of configuring an uplink/downlink symbol in the NR TDD systemmay be different from that in the LTE system, and is summarized below:

1) Cell-specific configuration: Allocate an uplink, downlink, andflexible symbol through system information or a common RRC signal

2) UE-specific configuration: Allocate an uplink or downlink symbol forresource allocated as flexible symbol through dedicated RRC message

3) Configuration through group common indication: Change flexible symbolthrough group-common physical downlink control channel (PDCCH), that is,slot format indicator (SFI)

4) UE-specific indication: Change flexible symbol through UE-specificPDCCH, that is, downlink control indicator (DCI)

Basically, a symbol for uplink/flexible/downlink transmission supportedin a cell is allocated for each specific slot, and a symbol allocatedfor flexible transmission for each terminal can be changed according toother transmission schemes. In the above description, the symbol forflexible transmission is a flexible symbol which can be indicated as asymbol for uplink and downlink transmission according to a base stationconfiguration. If a corresponding flexible symbol is not changed foranother transmission, neither uplink transmission nor downlinktransmission is performed in the corresponding symbol.

For example, as shown in FIG. 5 , TDD pattern 1 5-45, 5-50, and 5-55 maybe configured in a cell supported by base station 1. That is, in a slotincluding 14 symbols in total, six symbols 5-45 for downlinktransmission, three symbols 5-50 for flexible transmission, and fivesymbols 5-55 for uplink transmission may be sequentially configured. Inaddition, TDD pattern 2 5-65, 5-70, and 5-75 may be configured in a cellsupported by base station 2. That is, in a slot including 14 symbols intotal, two symbols 5-65 for downlink transmission, one symbol 5-70 forflexible transmission, and 11 symbols 5-75 for uplink transmission maybe sequentially configured. In this case, terminal 1 5-15 and terminal 25-20, which belong to base station 1 5-05 and base station 2 5-10,respectively, may transmit or receive data and a reference signalaccording to TDD resource information configured in correspondingserving cells. A specific downlink period 5-60 configured for terminal 1and a specific uplink period 5-80 of the neighbor cell may overlap, andterminal 1 5-15 in the cell edge may be affected by interference fromthe neighbor cell. In other words, in the downlink period 5-60, terminal1 5-15 may receive cross-link interference from terminal 2 5-20, whichmay lead to deterioration in communication performance. Due to thedeterioration in communication performance, an interference signalaffects a downlink signal which is intended to be received, theprobability of reception and demodulation failure may increase, and thusa data transmission and reception rate may decrease.

With regard to the problem described above, when the SRS-RSRP and theCLI-RSSI are measured for the periods 5-60 and 5-80, for whichcross-link interference measurement is indicated to a terminal by a basestation, and the measurement value is reported to the base station, thebase station may identify the extent of the cross-link interference onthe terminal in the corresponding periods. The base station may adjustscheduling for resource allocation based thereon and may adjust anuplink/downlink transmission slot and symbol of the terminal through adynamic TDD configuration.

The overall scenario shown in FIG. 5 is not limited to a scenariobetween TDD cells, and may be applied to a mobile communication networkin which a TDD cell and an FDD cell are mixed or only FDD cells areincluded.

FIG. 6 illustrates an overall process of receiving a measurementconfiguration including cross-link interference from a base station andtransmitting a measurement report relating thereto to the base stationby a terminal in the NR system according to an embodiment of thedisclosure.

Terminal 1 6-01 in an idle mode (RRC IDLE) searches for an appropriatecell in a cell (re)selection operation, camps on a corresponding basestation 6-02 (6-05), and then performs RRC connection with the basestation 6-02 according to generation of data to transmit (6-10), and thelike. In the idle mode, a terminal may not transmit data because thereis no network connection due to power-saving by the terminal, etc., andfor data transmission, transition to a connected mode (RRC CONNECTED) isrequired. Further, when the terminal camps on a cell, it means that theterminal is in the corresponding cell and receives a paging message todetermine whether data is transmitted through a downlink. Terminal 16-01 is successfully connected to the base station 6-02 through the RRC,the state of the corresponding terminal transitions to the connectedmode (RRC CONNECTED), and the terminal in the RRC-connected mode maytransmit or receive data to or from the base station.

As the terminal in the connected mode moves within the cell or outsidethe cell, the terminal may receive a command to move for datatransmission or reception through a newly connected cell/base stationafter handover from another cell/base station. To this end, the basestation may provide a configuration indicating measurement for anotherfrequency/cell (L3 measurement: a downlink reference signal such as aCSI-RS or SSB), through an RRC message (6-15). The measurementindication may include a measurement object, a condition, and parametersso that a terminal reports a measurement result to the base station. Inaddition, in the disclosure, not only the existing report through themeasurement of the downlink reference signal, but also the measurementand reporting of the cross-link interference described in FIG. 5 isconfigured and performed. In operation 6-15, the base station mayprovide measurement configuration information (measConfig) to theterminal, wherein, in the configuration information, CLI measurement-and reporting-related configuration information other than the existingmeasurement configuration and reporting of the downlink reference signalmay be included. Further, in the measurement configuration information(measConfig), a measurement object configuration (measObject), a reportconfiguration (reportConfig), the configuration of a measurementidentifier related to the measurement object and report scheme (measID),a configuration indicating types of values to be measured(quantityConfig) and the like may be included. The following ASN.1specifies measConfig signaling for reference.

Table 1 is an example of ASN.1 for a measurement configuration.

TABLE 1 MeasConfig : := SEQUENCE { measObjectToRemoveListMeasObjectToRemoveList OPTIONAL, -- Need N measObjectToAddModListMeasObjectToAddModList OPTIONAL, -- Need N reportConfigToRemoveListReportConfigToRemoveList OPTIONAL, -- Need N reportConfigToAddModListReportConfigToAddModList OPTIONAL, -- Need N measIdToRemoveListMeasIdToRemoveList OPTIONAL, -- Need N measIdToAddModListMeasIdToAddModList OPTIONAL, -- Need N s-MeasureConfig CHOICE { ssb-RSRPRSRP-Range, csi-RSRP RSRP-Range } OPTIONAL, -- Need M quantityConfigQuantityConfig OPTIONAL, -- Need M measGapConfig MeasGapConfig OPTIONAL,-- Need M measGapSharingConfig MeasGapSharingConfig OPTIONAL, -- Need M. . . }

Further, the following description focuses on configuration informationof the cross-link interference (refer to measurement object (MO)-relatedASN.1 below).

Table 2 is an example of ASN.1 for an MO configuration.

TABLE 2 MeasObjectNR : := SEQUENCE { ssbFrequency ARFCN- ValueNROPTIONAL, -- Cond SSBorAssociatedSS B ssbSubcarrierSpacingSubcarrierSpacing OTIONAL, -- Cond SSBorAssociatedSSB smtc1 SSB-MTCOPTIONAL, -- Cond SSBorAssociatedSSB smtc2 SSB-MTC2 OPTIONAL, -- CondIntraFreqConnected refFreqCSI-RS ARFCN-ValueNR OPTIONAL, -- Cond CSI-RSreferenceSignalConfig ReferenceSignalConfig,absThreshSS-BlocksConsolidation ThresholdNR OPTIONAL, -- Need RabsThreshCSI-RS-Consolidation ThresholdNR OPTIONAL, -- Need RnrofSS-BlocksToAverage INTEGER (2. .maxNrofSS-BlocksToAve rage)OPTIONAL, -- Need R nrofCSI-RS-ResourcesToAverage INTEGER (2..maxNrofCSI-RS-Resourc esToAverage) OPTIONAL, -- Need RquantityConfigIndex INTEGER (1. .maxNrofQuantityConfig ) , offsetMOQ-OffsetRangeList, cellsToRemoveList PCI-List OPTIONAL, -- Need NcellsToAddModList CellsToAddModList OPTIONAL, -- Need NblackCellsToRemoveList PCI-RangeIndexList OPTIONAL, -- Need NblackCellsToAddModList SEQUENCE (SIZE (1. .maxNrofPCI-Ran ges)) OFPCI-RangeElement OPTIONAL, -- Need N whiteCellsToRemoveListPCI-RangeIndexList OPTIONAL, -- Need N whiteCellsToAddModList SEQUENCE(SIZE (1. .maxNrofPCI-Ran ges)) OF PCI-RangeElement OPTIONAL, -- Need N. . . , [ [ freqBandIndicatorNR-v1530 FreqBandIndicatorNR OPTIONAL, --Need R measCycleSCell-v1530 ENUMERATED {sf160, sf256, sf320, sf512,sf640, sf1024, sf1280} OPTIONAL -- Need R ] ] }

1. Measurement Object (MO) Configuration

In an MO configuration scheme, a new MO only for CLI measurement or anew MO which can be universally applied to measure signals other thanthe downlink reference signal may be introduced. As an example ofmeasuring the signals other than the downlink reference signal, there isuplink delay measurement, and the like.

For example, the measObject newly introduced according to variousembodiments may be defined to include a CLI-measurement-dedicated MO forCLI measurement only, or other types of MOs for measuring signals otherthan the downlink reference signal.

In addition, the newly introduced measObject may be defined to performreporting differently from the existing report. For example, the newtype of report may be a type of report for delivering log data.

When a new MO is introduced, information on a serving cell with whichthe new MO is associated may be required. For example, information aboutwhich cell the configured MO has timing based on may be additionallyrequired. This is because a configuration on how a reference systemframe number (SFN) of the MO to be measured is defined and how othermeasurement frequency and synchronization are configured is required.Alternatively, the MO may be applied to the configured cell (forexample, PCell).

Further, with regard to the MO configuration, a scheme of adding aparameter for the CLI-measurement-related configuration is to beadditionally considered. In the disclosure, two schemes of adding a CLImeasurement parameter are proposed as below.

-   -   First CLI measurement parameter configuration scheme: This is a        scheme of directly adding resource (SRS resource, etc.)        configuration information for CLI measurement to the MO. This is        a scheme of explicitly specifying information required to        configure an SRS resource, in addition to and by extending from        a corresponding information element (IE), when the existing        measObjectNR is used. In the SRS resource configuration, the        number of ports through which SRSs are transmitted,        frequency-domain resource information and frequency hopping, an        SRS resource transmission scheme (periodic, semi-periodic, or        aperiodic), and the like, may be included, and the SRS resource        configuration corresponds to information including how an SRS        resource to be measured is transmitted, and through which time        and frequency resources.    -   Second CLI measurement parameter configuration scheme: This is a        scheme of indicating CLI measurement resource (SRS resource,        etc.) configuration information configured in the MO with        reference to the existing SRS configuration (SRS-Config). For        example, index information (srs-ResourceId) on SRS-Resource to        which an SRS resource is configured may be included, or the        parameter may be indicated through index information        (srs-ResourceSetId) on SRS-ResourceSet in which an SRS resource        set is configured. To this end, in the case in which SRS-Config        is provided in RRCReconfiguration, when configuring the        SRS-Resource configured only for CLI measurement or the        SRS-ResourceSet including the SRS-Resource configuration,        information indicating that the SRS resource (or the SRS        resource included in the SRS resource set) is for the SRS        measurement (CLI measurement) resource configuration, not for        the SRS transmission configuration may be included. The        information may be realized so as to include a 1-bit indicator        (CLI measurement indicator). When there is no indicator,        configuration information for SRS transmission is used for        determination.

In both schemes of adding a CLI measurement parameter, one MO mayinclude multiple pieces of SRS resource configuration information, ormultiple pieces of SRS resource configuration information may beconfigured to be included in one or more pieces of SRS resource setinformation. In addition, the MO for CLI measurement information mayinclude either the SRS resource or the CLI-RSSI resource, or may includeboth the SRS resource and the CLI-RSSI resource. This may be configuredin the structure of ASN.1 below.

Table 3 is an example of ASN.1 of an MO configuration for CLImeasurement.

TABLE 3 MeasObjectCLI-r16 : :=  SEQUENCE { cli-ResourceConfig-r16CLI-ResourceConfig-r16,  . . . } CLI-ResourceConfig-r16 : := SEQUENCE {srs-ResourceConfig-r16 SetupRelease { SRS-ResourceListConfig CLI-r16 }OPTIONAL, -- Need M rssi-ResourceConfig-r16 SetupRelease {RSSI-ResourceListConfi gCLI-r16 } OPTIONAL -- Need M }SRS-ResourceListConfigCLI-r16 : := SEQUENCE (SIZE (1. .maxNrofSRS-Resour ces-r16)) OF SRS-Resource,RSSI-ResourceListConfigCLI-r16 : :=  SEQUENCE (SIZE (1. .maxNrofCLI-RSSI-R esources-r16)) OF RSSI-ResourceConfigCLI-r16,RSSI-ResourceConfigCLI-r16 : : SEQUENCE {  rssi-ResourceId-r16 RSSI-ResourceId-r16,  rssi-SCS-r16  SubcarrierSpacing,  startPRB-r16 INTEGER (0. .2169) ,  nrofPRBs-r16  INTEGER (4. .maxNrofPhysicalResourceBlocksPlus1) ,  startPosition-r16  INTEGER (0. .13) ,  nrofSymbols-r16 INTEGER (1. .14) ,  rssi-PeriodicityAndOffset-r16 RSSI-PeriodicityAndOffset-r16, . . . } RSSI-ResourceId-r16 : := INTEGER (0. . maxNrofCLI-RSSI-Resources -r16-1)RSSI-PeriodicityAndOffset-r16 : :=  CHOICE {  sl10  INTEGER (0. .9) ,sl20 INTEGER (0. .19) , sl40 INTEGER (0. .39) , sl80 INTEGER (0. .79) ,sl160 INTEGER (0. .159) , sl320 INTEGER (0. .319) , sl640 INTEGER (0..639) ,  . . . }

Especially, the case in which the SRS resource is indicated for CLImeasurement may be structurally different from the case in which the SRSresource is configured for transmission.

For example, as shown in Table 4 below, when the base station configuresSRS resource transmission to the terminal, the configuration is made ina UL BWP in ServingCellConfig. That is, since a correspondingconfiguration is given for each BWP, BWP-related configurationinformation is not included in the SRS-Config itself. This is becausethe BWP information is already set in the upper-layer configuration.

Table 4 is an example of ASN.1 of SRS resource configuration fortransmission of an SRS configured in an UL BWP in ServingCellConfig.

TABLE 4 BWP-UplinkDedicated : := SEQUENCE { pucch-Config SetupRelease {PUCCH-Config } OPTIONAL, -- Need M pusch-Config SetupRelease {PUSCH-Config } OPTIONAL, -- Need M configuredGrantConfig SetupRelease {ConfiguredGrantCon fig } OPTIONAL, -- Need M srs-Config SetupRelease {SRS-Config } OPTIONAL, -- Need M beamFailureRecoveryConfig SetupRelease{ BeamFailureRecover yConfig } OPTIONAL, -- Cond SpCellOnly . . . }

However, when the MO for CLI measurement includes SRS-Config, themeasurement configuration is not configured for each BWP, but for eachserving cell. Accordingly, when the existing SRS-Config IE is used, BWPinformation in which the SRS resource is configured may be omitted, andinformation on the BWP in which the SRS resource to be measured isactually transmitted may not be identified. From the perspective of theterminal for measuring CLI, the terminal may measure the SRS resourcethat is measured in an activated DL BWP, but may not measure the entireSRS of the terminal for transmitting the SRS resource, whereby anaccurate threshold may not be applied, and reliability of application ofthe measurement result may be lost. In the disclosure, the SRS resourceconfiguration information for CLI measurement includes BWP informationwhich is applied when receiving the SRS resource in SRS-Config. Forexample, the BWP information may include the ID of a BWP to which aterminal for transmitting the SRS resource actually transmits the SRSresource, or time-frequency resource information of the correspondingBWP. For example, the BWP may include information on a frequency-domainstarting position (absolute radio frequency channel number (ARFCN)) andbandwidth, the number of physical resource blocks (PRBs), or the like.

The frequency configuration of the SRS resource for measurement issignaled in SRS-Config as shown below.

freqDomainPosition INTEGER (0. .67) , freqDomainShift INTEGER (0. .268),

However, the corresponding information means the frequency-domainposition of the SRS resource in a specific serving cell and BWP, andthus an absolute frequency-domain position of the SRS resource may notbe acquired. This is because the CLI measurement object may not beconfigured for each frequency, but all SRS resources configured forneighbor terminals may be configured in one MO. In addition, referringto RANI TS 38.211 below, the frequency-domain starting position of theSRS resource may be acquired as shown below.

     The  frequency-domain  starting  position  k₀^((p_(i)))  is  defined  by$\mspace{79mu}{k_{0}^{(p_{i})} = {{\overset{\_}{k}}_{0}^{(p_{i})} + {\sum\limits_{b = 0}^{B_{SRS}}{K_{TC}M_{{sc},b}^{SRS}n_{b}}}}}$     where$\mspace{79mu}{{\overset{\sim}{k}}_{0}^{(p_{i})} = {{n_{shift}N_{sc}^{RB}} + k_{TC}^{(p_{i})}}}$$k_{TC}^{(p_{i})} = \left\{ {{{{\begin{matrix}{\left. {{\overset{\_}{k}}_{TC} + {K_{TC}/2}} \right)\mspace{14mu}{mod}\mspace{14mu} K_{TC}} & {{if}\mspace{14mu} n_{SRS}^{cs}\epsilon\;\left\{ {{n_{SRS}^{{cs},\max}/2},\ldots\mspace{14mu},{n_{SRS}^{{cs},\max} - 1}} \right\}} \\\; & {{{and}\mspace{14mu} N_{ap}^{SRS}} = {{4\mspace{14mu}{and}\mspace{14mu} p_{i}} \in \left\{ {1001,1003} \right\}}} \\{\;{\overset{\_}{k}}_{TC}} & {otherwise}\end{matrix}\mspace{79mu}{If}\mspace{14mu} N_{BWP}^{start}} \leq {n_{shift}\mspace{14mu}{the}\mspace{14mu}{reference}\mspace{14mu}{point}\mspace{14mu}{for}\mspace{14mu} k_{0}^{(p_{i})}}} = {0\mspace{14mu}{is}\mspace{14mu}{subcarrier}\mspace{14mu} 0\mspace{79mu}{in}\mspace{14mu}{common}\mspace{14mu}{resource}\mspace{14mu}{block}\mspace{14mu} 0}},{{otherwise}\mspace{14mu}{the}\mspace{14mu}{reference}\mspace{14mu}{point}\mspace{14mu}{is}\text{}\mspace{79mu}{the}\mspace{14mu}{lowest}\mspace{14mu}{subcarrier}\mspace{14mu}{of}\mspace{14mu}{the}\mspace{14mu}{{BWP}.}}} \right.$

That is, in order to accurately identify the position of the SRSresource from other terminals to be measured, at least N_(BWP) ^(Start)needs to be additionally configured. Possible solutional options may beas shown below:

-   -   Option 1: Absolute frequency position and bandwidth information        or number of PRBs (as described above)    -   Option 2: Serving cell information (frequency information (this        is omissible when MO includes only SRS resource, which is in        same frequency as that of current terminal)+cell ID)+bandwidth        starting point of corresponding cell or BWP (N_(BWP) ^(Start))    -   Option 3: Frequency-domain starting point required to calculate        the frequency-domain location of SRS resource: N_(BWP) ^(Start).

2. Measurement Report (MR) Configuration

In the measurement object configuration operation, the MO of CLImeasurement is configured, and the terminal measures a resourceconfigured for the corresponding MO. In this case, a scheme of reportingthe MO to the base station needs to be determined, and the reportcondition and scheme may be included in the measurement reportconfiguration. In addition, the measurement report configuration may beconfigured so as to be associated with a specific MO (the MO to whichCLI measurement is configured). In the following description,measurement report schemes will be proposed and the detailed featuresthereof will be described.

A. Periodical Report Configuration

♦ According to various embodiments, a new reference signal type forperiodical report of CLI measurement may be defined. That is, a CLIperiodical-report-dedicated information element (IE) may be introduced,and a parameter related thereto may be configured. The periodicity, thenumber of reports, information on report resources, and the maximumnumber of resources included in the report may be included in thecorresponding configuration, as referred to in ASN.1 below.

Table 5 is an example of ASN.1 of a CLI periodical report configuration.

TABLE 5 CLI-PeriodicalReportConfig-r16 : := SEQUENCE {reportInterval-r16 ReportInterval,  reportAmount-r16  ENUMERATED {r1,r2, r4, r8, r16, r32, r64, infinity} , reportQuantityCLI-r16MeasReportQuantityCLI-r16, maxReportCLI-r16 INTEGER (1..maxCLI-Report-r16) , . . . }

B. Event-Based Report Configuration

According to various embodiments, a new event-based report dedicated tothe CLI measurement report may be introduced.

♦ New event: In the case where, among measurement values related to MO,SRS-RSRP or CLI-RSSI exceeds configured threshold

The event may have the same procedure as that of existing event A1, butthe type of reference signal to be measured may change, and thus anevent dedicated thereto is introduced.

For example, a new event (event I1) may have the same parameters asthose of event A1, but the type of reference signal applied tocorresponding a1-Threshold and the threshold range may change. In otherwords, as shown in Table 6, a new MeasTriggerQuantity-CLI may be definedand used for CLI measurement only. This is because the RSRP thresholdrange applied to the existing downlink CSI-RS and SSB and the RSRPthreshold range applied to the uplink SRS may be different from eachother. Accordingly, a new mapping table and index for SRS-RSRPmeasurement value and threshold mapping may be introduced and referredto. In addition, as described below, either SRS-RSRP or CLI-RSSI may beconfigured, or both SRS-RSRP and CLI-RSSI may be configured to the MOfor CLI. An event may occur for one resource type. The resource type fortriggering the event is to be specified. The resource type may bespecified according to one of two schemes below.

-   -   Configure a threshold (i1-Threshold-r16) type used to trigger        event to be either SRS-RSRP or CLI-RSSI. That is, configure        MeasTriggerQuantityCL1-r16 value to be either SRS-RSRP-Range-r16        or CLI-RSSI-Range-r16.    -   Introduce IE indicating explicit resource type, for example,        CLI-measurement type (triggering type)=CHOICE [SRS, RSSI]. That        is, specify one of two resources.

Table 6 is an example of ASN.1 of a MeasTriggerQuantity-CLIconfiguration dedicated to CLI measurement.

TABLE 6 CLI-EventTriggerConfig-r16 SEQUENCE { eventId-r16 CHOICE {eventI1-r16 SEQUENCE { i1-Threshold-r16 MeasTriggerQuantityCLI-r16,reportOnLeave-r16 BOOLEAN, hysteresis-r16 Hysteresis, timeToTrigger-r16TimeToTrigger } , . . . } , reportInterval-r16 ReportInterval,reportAmount-r16 ENUMERATED {r1, r2, r4, r8, r16, r32, r64, infinity),maxReportCLI-r16 INTEGER (1. .maxCLI-Report- r16) , . . . }MeasTriggerQuantityCLI-r16 : := CHOICE { srs-rsrp-r16SRS-RSRP-Range-r16, cli-rssi-r16 CLI-RSSI-Range-r16 }

In addition, when multiple SRS resources are configured to new event I1,the event-based SRS resource measurement report scheme below may beconsidered according to the number of times of reporting and the schemethereof.

♦ First scheme of reporting multiple SRSs: This is a reporting schemebased on a measurement value of each configured SRS resource. When atleast one of the SRS resources configured to the MO exceeds a thresholdand triggers a measurement report, the report may be made includingmeasurement values for all SRS resources included in the MO, orincluding only a measurement value for the SRS resource that triggeredthe event.

♦ Second scheme of reporting multiple SRSs: This is a reporting schemebased on an average value of all configured SRS resources. When anaverage of measurement values of SRS resources configured to the MOexceeds a threshold and triggers a measurement report, the report may bemade including measurement values for all SRS resources included in theMO, or including only an average measurement value of SRS resources thattriggered the event.

In addition, a 1-bit indicator for selecting the first scheme ofreporting multiple SRSs and the second scheme of reporting multiple SRSsmay be introduced.

The terminal having received the measurement value configured as abovetransmits a confirmation message indicating that the terminal hassuccessfully received the configuration information from the basestation (6-20). To this end, an RRCReconfigurationComplete message maybe used.

In operation 6-25, the terminal may transmit or receive data to or fromthe base station. In operation 6-30, the terminal starts performingmeasurement for a measurement resource of the serving cell and themeasurement object 6-31, 6-32, 6-33, 6-34 of terminal UE 2 6-03, and6-35 of terminal UE N 6-04 in which CLI measurement is included,configured in operation 6-15 above. In operation 6-30 above, for the MOto which a downlink reference signal is configured, the terminalmeasures the result of the cell-level measurement, and for theCLI-measurement-related MO, the terminal measures configured SRS-RSRPand CLI-RSSI and determines the report condition configured by the basestation. The configuration condition may be configured differentlydepending on whether measurement within a frequency or measurementbetween frequencies is performed. Especially, for the configuration ofchannel measurement between frequencies, carrier frequency informationindicating the corresponding frequency is required.

In operation 6-40, the terminal may trigger a measurement report inaccordance with the configured measurement report condition, wherein thetriggering scheme may include a periodical reporting scheme and anevent-based reporting scheme. The detailed reporting configuration mayfollow the reporting scheme described in operation 6-15 above.Especially, when the terminal receives configuration of the MO for CLIand performs measurement, the terminal performs measurement for an SRSresource that is not deactivated through a MAC CE, among SRS resourcesbelonging to an activated DL BWP in which the terminal is currentlyoperating. Here, measurement of the SRS resource that is not deactivatedmeans that measurement is performed only for SRS transmission from theperspective of the terminal. In addition, the terminal may measure onlyan RSSI resource which belongs to a current active DL BWP.

In operation 6-45, the terminal reports a measurement result to the basestation through the RRC message, wherein the report message may includeat least one of a serving cell measurement value, a neighbor cellmeasurement value, or a CLI measurement value. That is, all measurementvalues may exist, or respective measurement values may be included. Theoperation of measurement and measurement reporting are performed inoperation 6-45 by the terminal when the periodical report condition andan event-triggering report condition are satisfied, and has thefollowing features.

When an event-based report is performed by the terminal in operation6-45, that is, when measID is associated with measObjectCLI andReportConfig is configured with event IL the terminal determines whetheran entering condition or a leaving condition is satisfied amongCLI-measurement types of CLI measurement resources indicated inReportConfig. When at least one resource newly satisfies the enteringcondition, or when at least one resource newly satisfies the leavingcondition, the terminal generates a measurement report and reports thesame. In the measurement report, only a serving cell measurement resultand a CLI measurement result are included. The value used for themeasurement report may be the actual measurement value or an averagevalue of configured SRS/RSSI resources.

In addition, the measurement value may not include a measurement valuefor neighbor cells other the existing serving cell. A MeasObjectNRmeasurement scheme, which is measurement and reporting of a downlinksignal in the current NR, performs measurement for a frequency areasatisfying a predetermined condition, among indicated frequency areas,wherein the measurement result includes a serving cell measurementresult, a serving frequency neighbor cell measurement, and a non-servingfrequency neighbor cell measurement result. Further, for an IE for themeasurement report, instead of the existing ReportConfigNR, a new reportconfiguration ReportConfigNR-CLI may be introduced. Alternatively, themeasurement report may be restricted so that, when performing the CLImeasurement reporting, measurement reporting for the serving cell isalso performed at all times. The measurement report may be performed foreach of the SRS-RSRP and the CLI-RSSI.

Later, in operation 6-50, the base station may analyze the measurementvalue based on the measurement value received from the terminal andapply the same for network management. For example, the base station mayapply the analysis to a handover procedure and dynamic TDD schedulingand perform the same.

In addition, in the disclosure, a method of dynamically turning on/offmeasurement indication with respect to some of SRS resource informationconfigured in the CLI MO configured through an RRC message byintroducing a new MAC CE for optimization through the dynamicapplication of the CLI measurement is proposed. In operation 6-55, thebase station may transmit the MAC CE to the terminal to indicate dynamicupdate of the measurement indication with respect to some of SRSresources configured to the CLI MO. In operation 6-60, the terminal mayupdate the measurement information with the information indicated by theMAC CE and perform the related measurement. A detailed description ofthe MAC CE structure and feature will be provided below in connectionwith the following embodiment.

FIG. 7 illustrates the structure of a MAC CE indicating dynamic SRSmeasurement for cross-link interference according to an embodiment ofthe disclosure. The disclosure enables dynamic turning on/off ofmeasurement indication with respect to some of SRS resource informationconfigured in the CLI MO configured through an RRC message, therebyminimizing delay time. The possible options therefor are describedbelow.

A first option for dynamically updating a resource to be measured amongthe SRS resources configured to MO for CLI is to introduce a bitmap-typeSRS resource indication MAC CE.

Referring to FIG. 7 , the detailed structure and operation of thebitmap-type SRS resource indication MAC CE according to variousembodiments are as follows.

-   -   Reserved bit 7-05: This is required for byte alignment of the        MAC CE.    -   Serving cell ID 7-10 (6 bits): This is a serving cell identifier        to which an SRS resource for CLI measurement is configured.    -   BWP ID 7-15 (2 bits): This is a BWP identifier to which an SRS        resource for CLI measurement is configured. Alternatively,        information corresponding to the frequency-domain starting        position (N_(BWP) ^(Start)), to which an SRS resource is        configured, may be added. In this case, the number of required        bits may be determined according to the determination made        later, and may exceed 2 bits as shown in FIG. 7 .    -   SRS resource ID 7-20 (64 bits): This is an SRS resource ID for        CLI measurement in the RRC configuration. For an SRS resource ID        requiring measurement, the SRS resource ID is set to 1, and for        an SRS resource ID requiring no measurement, the SRS resource ID        is set to 0. The size of the bitmap is configured to be the        maximum value of the SRS resource configured to be measured. If        identifiers are mixed and used for the SRS resource for        measurement and the SRS resource for transmission, the size of        the bitmap increases in proportion to the total amount of all        SRS resources.

A second option for dynamically updating a resource to be measured amongthe SRS resources configured for CLI MO is to introduce an explicitID-type SRS resource indication MAC CE.

-   -   Reserved bit 7-25 and 7-50: This is required for byte alignment        of the MAC CE.    -   Serving cell ID 7-30 and 7-55 (6 bits): This is a serving cell        identifier to which an SRS resource for CLI measurement is        configured.    -   BWP ID 7-35 and 7-60 (2 bits): This is a BWP identifier to which        an SRS resource for CLI measurement is configured.    -   Activated/deactivated indicator (A/D) 7-40 and 7-65 (1 bit):        This is a dynamic activated/deactivated indicator of a CLI        measurement SRS resource configured through the RRC.    -   SRS resource ID 7-45 and 7-70 (7 bits): This is a CLI        measurement SRS resource ID configured through the RRC, and an        activated indicator and a deactivated indicator function as a        set. When the activated/deactivated indicator is set to 1, CLI        measurement for the SRS resource ID is performed, and when the        activated/deactivated indicator is set to 0, the CLI measurement        for the SRS resource ID is aborted.

In the MAC CE structure, there may exist multiple MOs for CLI., and theSRS resource may be configured for each MO. Accordingly, it is alsopossible to control the measurement of the SRS resource included in aspecific MO as a whole. In this case, for an identifier capable ofreferring to the MO, for example, measObjectID or measID may be used.Alternatively, in the MAC CE described above, a field includingmeasObjectID may be added.

FIG. 8 illustrates overall terminal operation for cross-linkinterference measurement and reporting according to an embodiment of thedisclosure.

In FIG. 6 above, the entire procedure of the cross-link interferencemeasurement and reporting is illustrated from a system point of view,and FIG. 8 will describe the cross-link interference measurement andreporting in a big frame of terminal point of view.

Referring to FIG. 8 , in operation 8-05, an RRC-connected terminal mayreceive a measurement configuration from a base station, and theconfiguration may include measObject, reportConfig, measID,quantityConfig, etc. Especially, the MO configuration specifies a signalto be measured and a resource through the signal is to be measured. ACSI-RS and SSB, which is a type of existing downlink reference signal,may be configured, and in the disclosure, CLI measurement informationincluding the SRS-RSRP and the CLI RSSI is included in the MOconfiguration. For the CLI MO configuration, the following may beconsidered, and a detailed information and proposal related thereto aremade with reference to FIG. 6 .

-   -   ● Introduction of new MO for CLI measurement    -   ● Scheme of including SRS/RSSI resource configuration        information for CLI (including, in the MO, configuration for the        SRS/RSSI resource to be measured)    -   ● Scheme of mapping BWP information or frequency information at        time of CLI SRS resource configuration

Further, in the measurement configuration in the above operation, areport configuration may be added, and in particular, a report conditionassociated with the MO for CLI may be included. In the disclosure, thereport configuration will be focused on an event-based report, and thedetailed information and proposal are made with reference to FIG. 6 .

-   -   ● Definition of event for case in which SRS-RSRP/CLI-RSSI        measurement value exceeds threshold: Introduction of new event        I1    -   ● Number of reports and report scheme in case in which multiple        SRS resources are configured        -   ♦ Scheme of reporting only measurement value of SRS resource            that triggered event, or of reporting all measurement values            of all configured SRS resources        -   ♦ Scheme in which measurement value is determined by            following actual SRS-RSRP value or by using average            measurement value of configured SRS resources

● Scheme of using threshold that is different from threshold used forexisting SRS measurement and event triggering (for SRS/RSSI only) so asto introduce new CLI measurement report configuration

In operation 8-10, the terminal performs measurement for the MOconfigured according to the measurement configuration received inoperation 8-05. In operation 8-10, when there is an MO configurationassociated with the CLI, measurement is performed for an SRS/RSSIresource configured in the MO, and in this case, the measurement isperformed in time and frequency resources in an activated downlink BWP.

In operation 8-15, the terminal identifies a report condition for themeasured CLI measurement, and includes the measured value in ameasurement result and prepares a report when the report condition issatisfied. The measurement report condition may be used both for theperiodical report and the event-based report, and the event-based reportmay be triggered when the value measured based on the SRS-RSRP/CLI-RSSIexceeds a threshold and a new event S1 is introduced.

In operation 8-20, the terminal receives, through an RRC message, themeasurement result including the measurement value generated inoperation 8-15 and transmits the same. Here, according to whether thetriggered resource is the SRS-RSRP or the CLI-RSSI, the measurementreport is separately performed. Later, the terminal may perform handoveror resource reconfiguration according to an RRCReconfiguration messagetransmitted from the base station.

FIG. 9 illustrates overall terminal operation in the case in whichmeasurement report is configured for cross-link interference accordingto an embodiment of the disclosure.

Referring to FIG. 9 , in operation 9-05, the terminal receives CLImeasurement configuration information, wherein the terminal receives aCLI MO configuration, configuration of event-based measurement reportand periodical measurement report associated with the CLI MO, and thelike. The configuration information may be included in the measurementconfiguration information and received through an RRCReconfigurationmessage. The detailed description of the configuration is made withreference to operation 6-15 in FIG. 6 .

In operation 9-10, the terminal performs CLI measurement according tothe configured measurement and reporting condition. When a periodicalreport is configured as a CLI measurement report condition, the terminalperforms measurement according to the configured periodicity and reportcondition. When an event-based measurement report is configured for theCLI measurement MO, the terminal triggers the event-based reportaccording to whether the measurement values (SRS-RSRP/CLI-RSSI) for theSRS resource and CLI-RSSI in the configured CLI measurement MO exceedrespective thresholds. The detailed procedure is operated in the sameway as existing event A1, and the threshold applied thereto may beredefined to have a value in a new range. This is because the RSRP rangeof the uplink reference signal and the RSRP range of the downlinkreference signal may be applied in different ways. If a new RSRP rangeis introduced, it may be redefined for each of ranges for the SRS-RSRPand the CLI-RSSI measurement, and may be applied only to the CLImeasurement, particularly, the SRS-RSRP and CLI-RSSI mapping. A newevent (for example, event I1) for the measurement report may beintroduced, and the procedure of event A1 may be applied for the entireprocedure without any change. The ReportOnLeave configuration andoperation may be introduced without any change, and thus theintroduction of an event such as event A2 (or introduction of event I2)may be omitted. Event I2 may have a condition in which the event istriggered when the measured SRS-RSRP/CLI-RSSI value decreases to a valueless than or equal to the threshold. In the disclosure, thecorresponding event is not introduced, and event A1 (I1) andReportOnLeave may replace the corresponding event as functions similarthereto.

In operation 9-15, the terminal triggers measurement reporting andincludes a corresponding measurement value when the CLI measurementresult satisfies a specific event condition according to the measurementresult acquired in operation 9-10.

In operation 9-20, depending on the report scheme that is configured forthe terminal, the terminal may operate in different ways. That is, whenone or more of configuration of multiple SRS resources and RSSI resourceconfiguration is included in the MO configured for CLI measurement, theterminal may trigger a measurement value applied for event triggeringbased on an actual measurement value or an average measurement value.The terminal includes the actual CLI measurement value or the averagemeasurement value in the measurement result according to the determinedmeasurement report scheme. In this case, only the measurementinformation on the SRS and RSSI resource that triggered the event may beincluded, or the measurement information on all SRS resources/RSSIresources included in the configured MO may be included. Further, themeasurement information may include either the SRS-RSRP value or theCLI-RSSI value, and this means that the measurement report is performedseparately depending on the resource type.

When the leaving condition is satisfied for the corresponding event inoperation 9-25, the report for the corresponding event is performedagain (9-35, performing operation 9-20 again at the current point intime). The entering condition and the leaving condition for event I1 areas follows. When the leaving condition is not satisfied in operation9-25, no separate operation is performed (9-30).

-   -   Inequality I1-1 (Entering condition)        Mi−Hys>Thresh    -   Inequality I1-2 (Leaving condition)        Mi+Hys<Thresh

In operation 9-40, the terminal may receive a MAC CE indicating dynamicmeasurement indication for an SRS resource, wherein with respect to someof SRS resources configured to the CLI MO, dynamic update of themeasurement indication may be indicated. In operation 9-45, the terminalupdates the measurement information with the information indicated bythe corresponding MAC CE, and performs the related measurement. Later,the terminal performs the CLI measurement and reporting again based onthe configured information.

FIG. 10 illustrates overall base station operation for cross-linkinterference measurement and reporting according to an embodiment of thedisclosure.

Especially, FIG. 10 includes performing a CLI measurement configurationand transmitting the CLI measurement configuration. The detaileddescription is made in FIG. 6 .

When there is an RRC-connected terminal, a corresponding base stationmay provide measurement configuration information to the terminalthrough the RRC configuration in order to sequentially apply theinformation for terminal mobility and scheduling. In the disclosure, thedescription will be focused on the CLI measurement, and in connectionwith FIG. 10 , basic descriptions will be omitted, and only adescription of CLI measurement will be made.

Referring to FIG. 10 , in operation 10-05, the base station may performCLI measurement configuration, wherein, for the configuration, an MOconfiguration including an SRS resource configuration may be set. Ascheme of configuring the MO in operation 10-05 may include: usingexisting measObjectNR without change; and introducing a new MO(measObjectNR-CLI) and including a CLI-dedicated configuration. Adetailed description of the corresponding configuration is made withreference to operation 6-15 in FIG. 6 .

In operation 10-10, the base station may set configuration informationfor the report, among pieces of measurement configuration informationfor CLI measurement. In operation 10-10, a periodical report and anevent-based measurement report, which are report configuration schemes,may be configured separately, and parameters related to the conditionand scheme required for the corresponding report may be included. Adetailed description of the configuration scheme is made with referenceto operation 6-15 in FIG. 6 .

In operation 10-15, the base station includes the measurementconfiguration information configured in operations 10-05 and 10-10 in anRRCReconfiguration message and transmits the configuration informationfor CLI measurement and reporting to the terminal through theRRCReconfiguration message. Basically, the measurement configurationprocedure in the NR system is applied, and the terminal, having receivedthe information, performs the CLI measurement and reporting according tothe information transmitted from the base station.

In operation 10-20, the base station receives a measurement resultincluded in the measurement report transmitted from the terminal. Here,according to the report condition associated with the MO related to theCLI measurement, the CLI measurement result is included in the report.

When the measurement report received in operation 10-25 corresponds to ameasurement result for a neighbor cell and a serving cell associatedwith the existing downlink reception signal, the base station maydetermine to perform handover based on the received measurement value,in operation 10-30. Further, in operation 10-35, the handover operationmay be performed.

However, in operation 10-40, when the measurement report received inoperation 10-25 corresponds to a measurement result associated with theCLI measurement value, the base station may determine to dynamicallyallocate a TDD resource based on the corresponding measurement result.In operation 10-45, the base station may perform the dynamic TDDscheduling directly, or may perform scheduling in the existing resourcefor reducing interference. In the above description, dynamic TDDresource scheduling means that, when it is determined based on the CLImeasurement result from the terminal that there is large cross-linkinterference in the corresponding DL measurement resource, thecorresponding resource is not changed to an uplink transmission resourcein the TDD resource. In addition, a resource having less interferencemay be changed to an uplink transmission resource (time).

FIG. 11 is a block diagram illustrating the internal structure of aterminal according to an embodiment of the disclosure.

Referring to FIG. 11 , the terminal includes a radio-frequency (RF)processor 11-10, a baseband processor 11-20, a memory 11-30, and acontroller 11-40.

The RF processor 11-10 performs a function of transmitting or receivinga signal through a radio channel, such as signal band conversion andamplification. That is, the RF processor 11-10 up-converts a basebandsignal, provided from the baseband processor 11-20, to an RF-band signaland transmits the converted RF-band signal through an antenna, anddown-converts an RF-band signal received through an antenna to abaseband signal. For example, the RF processor 11-10 may include atransmission filter, a reception filter, an amplifier, a mixer, anoscillator, a digital-to-analog converter (DAC), an analog-to-digitalconverter (ADC), and the like. Although only a single antenna isillustrated in FIG. 11 , the terminal may include multiple antennas. Inaddition, the RF processor 11-10 may include multiple RF chains.Furthermore, the RF processor 11-10 may perform beamforming. Forbeamforming, the RF processor 11-10 may adjust the phases and amplitudesof signals transmitted or received through multiple antennas or antennaelements. The RF processor 11-10 may also perform MIMO and may receivedata of multiple layers of data during the MIMO operation.

The baseband processor 11-20 performs conversion between a basebandsignal and a bitstream based on the physical layer specifications of asystem. For example, during data transmission, the baseband processor11-20 generates complex symbols by encoding and modulating atransmission bitstream. In addition, during data reception, the basebandprocessor 11-20 reconstructs a received bitstream by demodulating anddecoding a baseband signal provided from the RF processor 11-10. Forexample, according to an orthogonal frequency-division multiplexing(OFDM) scheme, during data transmission, the baseband processor 11-20generates complex symbols by encoding and modulating a transmissionbitstream, maps the complex symbols to subcarriers, and then configuresOFDM symbols by performing inverse fast Fourier transformation (IFFT)operation and cyclic prefix (CP) insertion. Further, during datareception, the baseband processor 11-20 segments a baseband signal,provided from the RF processor 11-10, in units of OFDM symbols,reconstructs signals mapped to subcarriers by performing a fast Fouriertransformation (FFT) operation, and then reconstructs a receivedbitstream by demodulating and decoding the signals.

The baseband processor 11-20 and the RF processor 11-10 transmit andreceive signals as described above. Accordingly, each of the basebandprocessor 11-20 and the RF processor 11-10 may also be referred to as atransmitter, a receiver, a transceiver, or a communication unit.Furthermore, at least one of the baseband processor 11-20 and the RFprocessor 11-10 may include multiple communication modules to supportmultiple different radio-access technologies. In addition, at least oneof the baseband processor 11-20 and the RF processor 11-10 may includemultiple communication modules to process signals of different frequencybands. For example, the different radio-access technologies may includea wireless local area network (LAN) (e.g., IEEE 802.11), a cellularnetwork (e.g., LTE), and the like. In addition, the different frequencybands may include a super-high frequency (SHF) (e.g., 2 NRHz and NRhz)band and a millimeter-wave (mmWave) (e.g., 60 GHz) band.

The memory 11-30 stores data such as basic programs, applications,configuration information, or the like for the operation of theterminal. In particular, the memory 11-30 may store information relatedto a second access node for performing wireless communication using asecond radio-access technology. The memory 11-30 provides the storeddata in response to a request from the controller 11-40.

The controller 11-40 controls the overall operation of the terminal. Forexample, the controller 11-40 transmits or receives signals through thebaseband processor 11-20 and the RF processor 11-10. Further, thecontroller 11-40 records and reads data to or from the memory 11-30. Tothis end, the controller 11-40 may include at least one processor 11-42.For example, the controller 11-40 may include a communication processor(CP) for controlling communication and an application processor (AP) forcontrolling an upper layer such as an application.

FIG. 12 is a block diagram illustrating the configuration of a basestation according to an embodiment of the disclosure.

Referring to FIG. 12 , the base station includes an RF processor 12-10,a baseband processor 12-20, a backhaul communication unit 12-30, amemory 12-40, and a controller 12-50.

The RF processor 12-10 performs a function of transmitting or receivinga signal through a radio channel, such as signal band conversion andamplification. That is, the RF processor 12-10 up-converts a basebandsignal provided from the baseband processor 12-20 to an RF-band signaland transmits the converted RF-band signal through an antenna, anddown-converts an RF-band signal received through an antenna to abaseband signal. For example, the RF processor 12-10 may include atransmission filter, a reception filter, an amplifier, a mixer, anoscillator, a DAC, an ADC, and the like. Although only a single antennais illustrated in FIG. 12 , the base station may include multipleantennas. In addition, the RF processor 12-10 may include multiple RFchains. Furthermore, the RF processor 12-10 may perform beamforming. Forbeamforming, the RF processor 12-10 may adjust phases and amplitudes ofsignals transmitted or received through multiple antennas or antennaelements. The RF processor 12-10 may perform downlink MIMO operation bytransmitting data of one or more layers.

The baseband processor 12-20 perform conversion between a basebandsignal and a bitstream based on the physical layer specifications of afirst radio-access technology. For example, during data transmission,the baseband processor 12-20 generates complex symbols by encoding andmodulating a transmission bitstream. In addition, during data reception,the baseband processor 12-20 reconstructs a received bitstream bydemodulating and decoding a baseband signal provided from the RFprocessor 12-10. For example, according to an OFDM scheme, during datatransmission, the baseband processor 12-20 generates complex symbols byencoding and modulating a transmission bitstream, maps the complexsymbols to subcarriers, and then configures OFDM symbols by performingIFFT operation and CP insertion. Further, during data reception, thebaseband processor 12-20 segments a baseband signal provided from the RFprocessor 12-10 into units of OFDM symbols, reconstructs signals mappedto subcarriers by performing FFT operation, and then reconstructs areceived bitstream by demodulating and decoding the signals. Thebaseband processor 12-20 and the RF processor 12-10 transmit and receivesignals as described above.

Accordingly, each of the baseband processor 12-20 and the RF processor12-10 may also be referred to as a transmitter, a receiver, atransceiver, a communication unit, or a wireless communication unit.

The backhaul communication unit 12-30 provides an interface forcommunicating with other nodes in a network. That is, the backhaulcommunication unit 12-30 transforms a bitstream transmitted from aprimary base station to another node, for example, a secondary basestation, a core network, or the like, into a physical signal, ortransforms a physical signal received from another node into abitstream.

The memory 12-40 stores data such as basic programs, applications,configuration information, or the like for the operation of theterminal. In particular, the memory 12-40 may store information relatedto a bearer allocated to a connected terminal, a result of measurementreported from the connected terminal, and the like. In addition, thememory 12-40 may store information which serves as criteria fordetermining whether or not to provide multi-connectivity to theterminal. The memory 12-40 provides the stored data upon a request fromthe controller 12-50.

The controller 12-50 controls the overall operation of the primary basestation. For example, the controller 12-50 transmits or receives asignal through the baseband processor 12-20 and the RF processor 12-10or through the backhaul communication unit 12-30. In addition, thecontroller 12-50 records and reads data on or from the memory 12-40. Tothis end, the controller 12-50 may include at least one processor 12-52.

In the above-described detailed embodiments of the disclosure, anelement included in the disclosure is expressed in the singular or theplural according to presented detailed embodiments. However, thesingular form or plural form is selected appropriately to the presentedsituation for the convenience of description, and the disclosure is notlimited by elements expressed in the singular or the plural. Therefore,either an element expressed in the plural may also include a singleelement or an element expressed in the singular may also includemultiple elements.

Although specific embodiments have been described in the detaileddescription of the disclosure, various modifications and changes may bemade thereto without departing from the scope of the disclosure.Therefore, the scope of the disclosure should not be defined as beinglimited to the embodiments, but should be defined by the appended claimsand equivalents thereof.

It should be appreciated that various embodiments of the disclosure andthe terms used therein are not intended to limit the technologicalfeatures set forth herein to particular embodiments and include variouschanges, equivalents, and/or alternatives for a correspondingembodiment. With regard to the description of the drawings, similarreference numerals may be used to designate similar or relevantelements. It is to be understood that a singular form of a nouncorresponding to an item may include one or more of the things, unlessthe relevant context clearly indicates otherwise. As used herein, eachof such phrases as “A or B,” “at least one of A and B,” “at least one ofA or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least oneof A, B, or C,” may include all possible combinations of the itemsenumerated together in a corresponding one of the phrases. As usedherein, such terms as “a first”, “a second”, “the first”, and “thesecond” may be used to simply distinguish a corresponding element fromanother, and does not limit the elements in other aspect (e.g.,importance or order). It is to be understood that if an element (e.g., afirst element) is referred to, with or without the term “operatively” or“communicatively”, as “coupled with,” “coupled to,” “connected with,” or“connected to” another element (e.g., a second element), it means thatthe element may be coupled with the other element directly (e.g.,wiredly), wirelessly, or via another element (e.g., third element).

As used herein, the term “module” may include a unit implemented inhardware, software, or firmware, and may be interchangeably used withother terms, for example, “logic,” “logic block,” “component,” or“circuit”. The “module” may be a minimum unit of a single integratedcomponent adapted to perform one or more functions, or a part thereof.For example, according to an embodiment, the “module” may be implementedin the form of an application-specific integrated circuit (ASIC).

Various embodiments as set forth herein may be implemented as software(e.g., the program) including instructions that are stored in a storagemedium (e.g., internal memory or external memory) that is readable by amachine (e.g., computer). The machine is a device that can invoke thestored instructions from the storage medium and operate according to theinvoked instructions, and may include auxiliary base station orterminals according to various embodiments. When the instructions areexecuted by a processor (e.g., the controller 11-40, 12-50 in the devicedrawings), the processor may perform at least one function according tothe at least one instruction perform functions corresponding to theinstructions, with or without using other components under the controlof the processor. The instructions may include a code generated by acomplier or a code executable by an interpreter.

The machine-readable storage medium may be provided in the form of anon-transitory storage medium. Wherein, the term “non-transitory” simplymeans that the storage medium is a tangible device, and does not includea signal (e.g., an electromagnetic wave), but this term does notdifferentiate between where data is semi-permanently stored in thestorage medium and where the data is temporarily stored in the storagemedium.

Methods according to various embodiments of the disclosure may beincluded and provided in a computer program product. The computerprogram product may be traded as a product between a seller and a buyer.The computer program product may be distributed in the form of amachine-readable storage medium (e.g., compact disc read only memory(CD-ROM)), or be distributed (e.g., downloaded or uploaded) online viaan application store (e.g., Play Store™), or between two user devices(e.g., smart phones) directly. If distributed online, at least part ofthe computer program product may be temporarily generated or at leasttemporarily stored in the machine-readable storage medium, such asmemory of the manufacturer's server, a server of the application store,or a relay server.

According to various embodiments, each element (e.g., a module or aprogram) of the above-described elements may include a single entity ormultiple entities. According to various embodiments, one or more of theabove-described elements may be omitted, or one or more other elementsmay be added. Alternatively or additionally, a plurality of elements(e.g., modules or programs) may be integrated into a single element. Insuch a case, according to various embodiments, the integrated elementmay still perform one or more functions of each of the plurality ofelements in the same or similar manner as they are performed by acorresponding one of the plurality of elements before the integration.According to various embodiments, operations performed by the module,the program, or another element may be carried out sequentially, inparallel, repeatedly, or heuristically, or one or more of the operationsmay be executed in a different order or omitted, or one or more otheroperations may be added.

According to various embodiments described above, operations performedby the module, the program, or another element may be carried outsequentially, in parallel, repeatedly, or heuristically, or one or moreof the operations may be executed in a different order or omitted, orone or more other operations may be added.

The methods of the various embodiments illustrated in FIGS. 1 to 12 mayinclude a combination of methods from one or more drawings according tovarious implementations.

For example, FIGS. 1 to 12 illustrate operations related to a cross-linkinterference measurement and reporting procedure, and according tovarious implementations, the methods may include a combination ofmethods from one or more drawings.

While the disclosure has been shown and described with reference tovarious embodiments thereof, it will be understood by those skilled inthe art that various changes in form and details may be made thereinwithout departing from the spirit and scope of the disclosure as definedby the appended claims and their equivalents.

What is claimed is:
 1. A method performed by a terminal in acommunication system, the method comprising: receiving, from a basestation, a measurement object configuration for a cross linkinterference (CLI) measurement and a report configuration, wherein themeasurement object configuration includes a sounding reference signal(SRS) resource configuration for the CLI measurement, wherein the SRSresource configuration includes first information on an SRS resource forthe CLI measurement and second information on a downlink bandwidth part(BWP) for the SRS resource, the second information corresponding to adownlink BWP identifier (ID) for receiving an SRS on the SRS resource;identifying a reference signal received power (RSRP) of the SRS receivedon the SRS resource by a measurement on the SRS resource based on theSRS resource configuration; identifying a threshold value for triggeringa transmission of the RSRP of the SRS based on the report configuration;and transmitting, to the base station, a measurement result for the CLImeasurement including third information on the RSRP of the SRS based onthe report configuration, wherein the transmission of the measurementresult for the CLI measurement including the third information on theRSRP of the SRS is triggered in case that the RSRP of the SRS is higherthan the identified threshold value.
 2. The method of claim 1, whereinthe first information on the SRS resource includes at least one ofinformation on a number of ports, information on a time domain resource,or information on a frequency domain resource, wherein the secondinformation on the downlink BWP is used to identify a reference pointfor the SRS resource, and wherein the SRS resource configuration furtherincludes fourth information on a serving cell for which the downlink BWPis configured.
 3. The method of claim 1, wherein the reportconfiguration includes an event triggered report configuration for theCLI measurement, and wherein the event triggered report configurationincludes the threshold value for the RSRP of the SRS.
 4. The method ofclaim 1, wherein the measurement object configuration further includes aresource configuration for a reference signal strength indicator (RSSI)associated with the CLI measurement, wherein the resource configurationfor the RSSI associated with the CLI measurement includes fifthinformation on a resource on which the RSSI is to be measured, whereinthe report configuration includes an event triggered reportconfiguration for the CLI measurement, and wherein the event triggeredreport configuration includes a threshold value for the RSSI associatedwith the CLI measurement.
 5. The method of claim 4, wherein the RSSIassociated with the CLI measurement is identified by a measurement onthe resource, and wherein transmission of a measurement result for theCLI measurement including information on the RSSI associated with theCLI measurement is triggered based on an identification that the RSSIassociated with the CLI measurement is higher than the threshold.
 6. Amethod performed by a base station in a communication system, the methodcomprising: transmitting, to a terminal, a measurement objectconfiguration for a cross link interference (CLI) measurement and areport configuration, wherein the measurement object configurationincludes a sounding reference signal (SRS) resource configuration forthe CLI measurement, wherein the SRS resource configuration includesfirst information on an SRS resource for the CLI measurement and secondinformation on a downlink bandwidth part (BWP) for the SRS resource, thesecond information corresponding to a downlink BWP identifier (ID) fortransmitting an SRS on the SRS resource; and receiving, from theterminal, a measurement result for the CLI measurement including thirdinformation on a reference signal received power (RSRP) of the SRStransmitted on the SRS resource, wherein the RSRP of the SRS is based ona measurement on the SRS resource, wherein the measurement on the SRSresource is based on the SRS resource configuration, and wherein athreshold value for triggering a transmission of the RSRP of the SRS isidentified, by the terminal, based on the report configuration, and thetransmission of the measurement result for the CLI measurement includingthe third information on the RSRP of the SRS is triggered in case thatthe RSRP of the SRS is higher than the identified threshold value. 7.The method of claim 6, wherein the first information on the SRS resourceincludes at least one of information on a number of ports, informationon a time domain resource, or information on a frequency domainresource, wherein the second information on the downlink BWP is used toidentify a reference point for the SRS resource, and wherein the SRSresource configuration further includes fourth information on a servingcell for which the downlink BWP is configured.
 8. The method of claim 6,wherein the report configuration includes an event triggered reportconfiguration for the CLI measurement, and wherein the event triggeredreport configuration includes the threshold value for the RSRP of theSRS.
 9. The method of claim 6, wherein the measurement objectconfiguration further includes a resource configuration for a referencesignal strength indicator (RSSI) associated with the CLI measurement,wherein the resource configuration for the RSSI associated with the CLImeasurement includes fifth information on a resource on which the RSSIis to be measured, wherein the report configuration includes an eventtriggered report configuration for the CLI measurement, and wherein theevent triggered report configuration includes a threshold value for theRSSI associated with the CLI measurement.
 10. The method of claim 9,wherein the RSSI associated with the CLI measurement is based on ameasurement on the resource, and wherein reception of a measurementresult for the CLI measurement including information on the RSSIassociated with the CLI measurement is based on an identification thatthe RSSI associated with the CLI measurement is higher than thethreshold.
 11. A terminal in a communication system, the terminalcomprising: a transceiver; and a controller coupled with the transceiverand configured to: receive, from a base station, a measurement objectconfiguration for a cross link interference (CLI) measurement and areport configuration, wherein the measurement object configurationincludes a sounding reference signal (SRS) resource configuration forthe CLI measurement, wherein the SRS resource configuration includesfirst information on an SRS resource for the CLI measurement and secondinformation on a downlink bandwidth part (BWP) for the SRS resource, thesecond information corresponding to a downlink BWP identifier (ID) forreceiving an SRS on the SRS resource, identify a reference signalreceived power (RSRP) of the SRS received on the SRS resource by ameasurement on the SRS resource based on the SRS resource configuration,identifying a threshold value for triggering a transmission of the RSRPof the SRS based on the report configuration, and transmit, to the basestation, a measurement result for the CLI measurement including thirdinformation on the RSRP of the SRS based on the report configuration,wherein the transmission of the measurement result for the CLImeasurement including the third information on the RSRP of the SRS istriggered in case that the RSRP of the SRS is higher than the identifiedthreshold value.
 12. The terminal of claim 11, wherein the firstinformation on the SRS resource includes at least one of information ona number of ports, information on a time domain resource, or informationon a frequency domain resource, wherein the second information on thedownlink BWP is used to identify a reference point for the SRS resource,and wherein the SRS resource configuration further includes fourthinformation on a serving cell for which the downlink BWP is configured.13. The terminal of claim 11, wherein the report configuration includesan event triggered report configuration for the CLI measurement, andwherein the event triggered report configuration includes the thresholdvalue for the RSRP of the SRS.
 14. The terminal of claim 11, wherein themeasurement object configuration further includes a resourceconfiguration for a reference signal strength indicator (RSSI)associated with the CLI measurement, wherein the resource configurationfor the RSSI associated with the CLI measurement includes fifthinformation on a resource on which the RSSI is to be measured, whereinthe report configuration includes an event triggered reportconfiguration for the CLI measurement, and wherein the event triggeredreport configuration includes a threshold value for the RSSI associatedwith the CLI measurement.
 15. The terminal of claim 14, wherein the RSSIassociated with the CLI measurement is identified by a measurement onthe resource, and wherein transmission of a measurement result for theCLI measurement including information on the RSSI associated with theCLI measurement is triggered based on an identification that the RSSIassociated with the CLI measurement is higher than the threshold.
 16. Abase station in a communication system, the base station comprising: atransceiver; and a controller coupled with the transceiver andconfigured to: transmit, to a terminal, a measurement objectconfiguration for a cross link interference (CLI) measurement and areport configuration, wherein the measurement object configurationincludes a sounding reference signal (SRS) resource configuration forthe CLI measurement, wherein the SRS resource configuration includesfirst information on an SRS resource for the CLI measurement and secondinformation on a downlink bandwidth part (BWP) for the SRS resource, thesecond information corresponding to a downlink BWP identifier (ID) fortransmitting an SRS on the SRS resource, and receive, from the terminal,a measurement result for the CLI measurement including third informationon a reference signal received power (RSRP) of the SRS transmitted onthe SRS resource, wherein the RSRP of the SRS is based on a measurementon the SRS resource, wherein the measurement on the SRS resource isbased on the SRS resource configuration, and wherein a threshold valuefor triggering a transmission of the RSRP of the SRS is identified, bythe terminal, based on the report configuration, and the transmission ofthe measurement result for the CLI measurement including the thirdinformation on the RSRP of the SRS is triggered in case that the RSRP ofthe SRS is higher than the identified threshold value.
 17. The basestation of claim 16, wherein the first information on the SRS resourceincludes at least one of information on a number of ports, informationon a time domain resource, or information on a frequency domainresource, wherein the second information on the downlink BWP is used toidentify a reference point for the SRS resource, and wherein the SRSresource configuration further includes fourth information on a servingcell for which the downlink BWP is configured.
 18. The base station ofclaim 16, wherein the report configuration includes an event triggeredreport configuration for the CLI measurement, and wherein the eventtriggered report configuration includes the threshold value for the RSRPof the SRS.
 19. The base station of claim 16, wherein the measurementobject configuration further includes a resource configuration for areference signal strength indicator (RSSI) associated with the CLImeasurement, wherein the resource configuration for the RSSI associatedwith the CLI measurement includes fifth information on a resource onwhich the RSSI is to be measured, wherein the report configurationincludes an event triggered report configuration for the CLImeasurement, and wherein the event triggered report configurationincludes a threshold value for the RSSI associated with the CLImeasurement.
 20. The base station of claim 19, wherein the RSSIassociated with the CLI measurement is based on a measurement on theresource, and wherein reception of a measurement result for the CLImeasurement including information on the RSSI associated with the CLImeasurement is based on an identification that the RSSI associated withthe CLI measurement is higher than the threshold.